Muhib_Codes
Arrays
Input and Output of the arrays
#include<iostream>
#include<cstdlib>
#include<ctime>
using namespace std;
int main()
{ int x=time(0);
srand(x);
const int size=100;
int arr[size]={};
int max=arr[0];
int min;
for(int i=0;i<10;i++){
arr[i]=(rand()%100)+1;
}
for(int i=0;i<10;i++){
cout<<arr[i]<<" ";
}}
Write a C++ program to print all negative elements in the array.
#include<iostream>
using namespace std;
int main()
{
const int size=10;
int arr[size];
cout<<"Enter the numbers:"<<endl;
for(int i=0;i<size;i++){
cin>>arr[i];
}
cout<<"The negative elements in the array = "<<endl;
for(int i=0;i<size;i++){
if(arr[i]<0)
{
cout<<arr[i]<<" ";
}
}
return 0;
}
Write a C++ program to find sum of all elements in the array.
#include<iostream>
using namespace std;
int main()
{
const int size=10;
int arr[size];
int sum=0;
cout<<"Enter the numbers:"<<endl;
for(int i=0;i<size;i++){
cin>>arr[i];
sum=sum+arr[i];
}
cout<<"The sum of all the elements in the array = "<<sum<<endl;
return 0;
}
Write a C++ program to find the largest and smallest element in the array.
#include<iostream>
using namespace std;
int main()
{
const int size=4;
int arr[size];
int max;
int min;
cout<<"Enter the numbers:"<<endl;
for(int i=0;i<size;i++){
cin>>arr[i];
}
max=arr[0];
min=arr[0];
for(int i=0;i<size;i++){
if(max<arr[i])
{
max=arr[i];
}
if(min>arr[i])
{
min=arr[i];
}
}
cout<<"The maximum between these numbers = "<<max<<endl;
cout<<"The minimum between these numbers = "<<min<<endl;
return 0;
}
Write a C++ program to find the Second largest element in the array.
#include<iostream>
#include<cstdlib>
#include<ctime>
using namespace std;
int main()
{
const int size=10;
int arr[size];
int firstMax;
int secondMax;
int x=time(0);
srand(x);
for(int i=0;i<size;i++){
arr[i]=(rand()%10)+1;
}
for(int i=0;i<size;i++){
cout<<arr[i]<<" ";
}
firstMax=arr[0];
secondMax=arr[0];
for(int i=0;i<size;i++){
if(firstMax<arr[i])
{
firstMax=arr[i];
}
}
for(int i=0;i<size;i++){
if(arr[i]==firstMax)
{
continue;
}
else
{
if(secondMax<arr[i])
{
secondMax=arr[i];
}
}
}
cout<<"The second largest element in the array = "<<secondMax<<endl;
return 0;
}
/*legal way is that firstly you sort the array and then find the 2nd largest and 2nd smallest by
by the index print 2nd */
Write a c++ program to insert the element in the end of the array.
#include<iostream>
#include<cstdlib>
#include<ctime>
using namespace std;
int main()
{
const int size=11;
int arr[size];
int num;
int x=time(0);
srand(x);
for(int i=0;i<10;i++){
arr[i]=(rand()%10)+1;
}
for(int i=0;i<10;i++){
cout<<arr[i]<<" ";
}
cout<<endl;
cout<<"Enter the element that you want to be insert :"<<endl;
cin>>num;
for(int i=0;i<size;i++){
if(i==10)
{
arr[i]=num;
}
cout<<arr[i]<<" ";
}
return 0;
}
Write a c++ program to insert the element at the specific position.
#include<iostream>
#include<cstdlib>
#include<ctime>
using namespace std;
int main()
{
const int size=11;
int arr[size];
int num;
int pos;
int x=time(0);
srand(x);
for(int i=0;i<10;i++){
arr[i]=(rand()%10)+1;
}
for(int i=0;i<10;i++){
cout<<arr[i]<<" ";
}
cout<<endl;
cout<<"Enter the element that you want to be insert :"<<endl;
cin>>num;
cout<<"Enter the specific position that you want to insert :"<<endl;
cin>>pos;
for(int i=size;i>pos-2;i--){
arr[i]=arr[i-1];
if(i==pos-1)
{
arr[i]=num;
}
}
cout<<"The inserted array at the specific position = "<<endl;
for(int i=0;i<size;i++){
cout<<arr[i]<<" ";
}
return 0;
}
Write a c++ program to delete the element at the specific position.
#include<iostream>
#include<cstdlib>
#include<ctime>
using namespace std;
int main()
{
const int size=10;
int arr[size];
int num;
int pos;
int x=time(0);
srand(x);
for(int i=0;i<size;i++){
arr[i]=(rand()%10)+1;
}
for(int i=0;i<size;i++){
cout<<arr[i]<<" ";
}
cout<<endl;
cout<<"Enter the specific position that you want to delete :"<<endl;
cin>>pos;
for(int i=pos-1;i<size-1;i++){
arr[i]=arr[i+1];
}
cout<<"The deleted array = "<<endl;
for(int i=0;i<size-1;i++)
{
cout<<arr[i]<<" ";
}
return 0;
}
Write a C++ Program to count the frequncy of the elements in the array.
#include<iostream>
using namespace std;
int main()
{
const int size=10;
int arr[size];
int freq[size]={0};//Initailize the whole array of frequency with zero
int count;
cout<<"Enter the elements of the array :"<<endl;
for(int i=0;i<size;i++){
cin>>arr[i];
}
cout<<"The elements that you want to be enter = "<<endl;
for(int i=0;i<size;i++){
cout<<arr[i]<<" ";
}
cout<<"The frequency of each element = "<<endl;
//outer loop controls the number index that frequenct can be counted
for(int i=0;i<size;i++ ){
count=1;//intitalize to 1 beacuse every number must have a minimum frequency of 1
for(int j=i+1;j<=size;j++)//inner loop starts from the i+1 to campare it with nrext index element
{
if(arr[i]==arr[j])//comparsion
{
count++;
freq[j]=-1;//this is very imporatnt concpet that if number repeats than it iniliathe the next index of freq with -1
//to not repeat the it
}
}
if(freq[i]!=-1)//if index is not equal to -1 than its value of freq is equal to the count
{
freq[i]=count;
}
}
for(int i=0;i<size;i++)
{
//if eveery those index of freq that have not the -1 repeated index we just printed only these values
if(freq[i]!=-1)
{
cout<<"The number "<<arr[i]<<" has frequency of "<<freq[i]<<endl;
}
}
return 0;
}
Write a C++ program print all unique elements in the array.
#include<iostream>
using namespace std;
int main()
{
const int size=10;
int arr[size];
int freq[size]={0};//Initailize the whole array of frequency with zero
int count;
cout<<"Enter the elements of the array :"<<endl;
for(int i=0;i<size;i++){
cin>>arr[i];
}
cout<<"The elements that you want to be enter = "<<endl;
for(int i=0;i<size;i++){
cout<<arr[i]<<" ";
}
cout<<"The unique elements are = "<<endl;
//outer loop controls the number index that frequenct can be counted
for(int i=0;i<size;i++ ){
count=1;//intitalize to 1 beacuse every number must have a minimum frequency of 1
for(int j=i+1;j<=size;j++)//inner loop starts from the i+1 to campare it with nrext index element
{
if(arr[i]==arr[j])//comparsion
{
count++;
freq[j]=-1;//this is very imporatnt concpet that if number repeats than it iniliathe the next index of freq with -1
//to not repeat the it
}
}
if(freq[i]!=-1)//if index is not equal to -1 than its value of freq is equal to the count
{
freq[i]=count;
}
}
for(int i=0;i<size;i++)
{
//if element have frequency 1 we just printed only these values
if(freq[i]==1)
{
cout<<arr[i]<<" ";
}
}
return 0;
}
Write a C++ program to count number of duplicate elements in the array.
#include<iostream>
using namespace std;
int main()
{
const int size=10;
int arr[size];
int freq[size]={0};//Initailize the whole array of frequency with zero
int count;
cout<<"Enter the elements of the array :"<<endl;
for(int i=0;i<size;i++){
cin>>arr[i];
}
cout<<"The elements that you want to be enter = "<<endl;
for(int i=0;i<size;i++){
cout<<arr[i]<<" ";
}
cout<<"The unique elements are = "<<endl;
//outer loop controls the number index that frequenct can be counted
for(int i=0;i<size;i++ ){
count=1;//intitalize to 1 beacuse every number must have a minimum frequency of 1
for(int j=i+1;j<=size;j++)//inner loop starts from the i+1 to campare it with nrext index element
{
if(arr[i]==arr[j])//comparsion
{
count++;
freq[j]=-1;//this is very imporatnt concpet that if number repeats than it iniliathe the next index of freq with -1
//to not repeat the it
}
}
if(freq[i]!=-1)//if index is not equal to -1 than its value of freq is equal to the count
{
freq[i]=count;
}
}
for(int i=0;i<size;i++)
{
//if element have frequency 2 we just printed only these values
if(freq[i]==2)
{
cout<<arr[i]<<" ";
}
}
return 0;
}
Write a c++ progarm to copy the one array into the another array.
#include<iostream>
#include<cstdlib>
#include<ctime>
using namespace std;
int main()
{
const int size=10;
int arr[size];
int copy[size]={0};
int x=time(0);
srand(x);
for(int i=0;i<size;i++){
arr[i]=(rand()%10)+1;
}
for(int i=0;i<size;i++){
cout<<arr[i]<<" ";
}
cout<<endl;
cout<<"The uncopied array = ";
for(int i=0;i<size;i++){
cout<<copy[i]<<" ";
}
cout<<endl;
cout<<"The copied array = ";
for(int i=0;i<size;i++){
copy[i]=arr[i];
}
for(int i=0;i<size;i++){
cout<<copy[i]<<" ";
}
return 0;
}
Write a C++ program to delete all the duplicate elements in the array:
#include <iostream>
using namespace std;
int main()
{
int size = 10;
int arr[size] = {};
cout << "Enter the elemnts in the array:" << endl;
for (int i = 0; i < size; i++)
{
cin >> arr[i];
}
for (int i = 0; i < size; i++)
{
cout << arr[i] << " ";
}
for (int i = 0; i < size; i++)
{ // outer loop i can control the index that can be compared to be repeated or not
for (int j = i + 1; j <= size; j++)
{ // innner loop j can be control the index with the i index can be compared
if (arr[i] == arr[j])
{
for (int k = j; k <= size; k++)
{ // most inner loop k can shift the array to overwrite the repeated index with the next index element
arr[k] = arr[k + 1]; // when we can shift the array the size of array after one iteration of k became size-1
}
size--; // so write as size-- after the shifting of an full array
}
}
}
cout << "The latest array is here:" << endl;
for (int i = 0; i < size; i++)
{
cout << arr[i] << " ";
}
return 0;
}
Write a C++ program to merge two arrays into the second array:
#include<iostream>
using namespace std;
int main()
{
int size1;
int size2;
int size3;
cout<<"Enter the size of the first array:"<<endl;
cin>>size1;
int arr1[size1];
cout<<"Enter the elements of one array:"<<endl;
for(int i=0;i<size1;i++){
cin>>arr1[i];
}
cout<<"Enter the size of the first array:"<<endl;
cin>>size2;
int arr2[size2];
cout<<"Enter the elements in the second array:"<<endl;
for(int i=0;i<size2;i++){
cin>>arr2[i];
}
size3=size1+size2;
int arr3[size3]={};
cout<<"The third array before the merging is initialized to zero as:"<<endl;
for(int i=0;i<size3;i++){
cout<<arr3[i]<<" ";
}
cout<<endl;
int j=0;
for(int i=0;i<size3;i++){
if(i<size1)
{
arr3[i]=arr1[i];
}
else{
arr3[i]=arr2[j];
j++;
}
}
cout<<"The third array after the merging is as:"<<endl;
for(int i=0;i<size3;i++)
{
cout<<arr3[i]<<" ";
}
return 0;
}
Write a C++ program to revers the array:
#include<iostream>
#include<cstdlib>
#include<ctime>
using namespace std;
int main()
{
const int size=10;
int x=time(0);
srand(x);
int arr[size];
cout<<"The array without reversed as:"<<endl;
for(int i=0;i<size;i++){
arr[i]=(rand()%10)+1;
}
for(int i=0;i<size;i++){
cout<<arr[i]<<" ";
}
cout<<endl;
for(int i=0,j=size-1;i<(size/2);i++,j--){
int temp;
temp=arr[i];
arr[i]=arr[j];
arr[j]=temp;
}
cout<<"The reversed array is as:"<<endl;
for(int i=0;i<size;i++){
cout<<arr[i]<<" ";
}
return 0;
}
Write a C++ program to put the even and odd elements of an array into the two separate arrays:
#include<iostream>
using namespace std;
int main()
{
const int size=10;
int arr3[size];
int arr_even[size]={};
int arr_odd[size]={};
int even=0;
int odd=0;
cout<<"Enter the elements in the array:"<<endl;
for(int i=0;i<size;i++)
{
cin>>arr3[i];
}
cout<<"The elements enter in the array are :"<<endl;
for(int i=0;i<size;i++)
{
cout<<arr3[i]<<" ";
}
cout<<endl;
for(int i=0,j=0,k=0;i<size;i++)
{
if(arr3[i]%2==0){
arr_even[j]=arr3[i];
even++;
j++;
}
else
{
arr_odd[k]=arr3[i];
odd++;
k++;
}
}
cout<<"The even elements in the array are as:"<<endl;
for(int i=0;i<even;i++){
cout<<arr_even[i]<<" ";
}
cout<<endl;
cout<<"The odd elements in the array are as:"<<endl;
for(int i=0;i<odd;i++){
cout<<arr_odd[i]<<" ";
}
return 0;
}
Sorting Alhorithms:
Bubble Sort
#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;
int main()
{
int x = time(0);
srand(x);
int size = 10;
int arr[size];
cout << "The elemnets in the array are given as:" << endl;
for (int i = 0; i < size; i++)
{
// arr[i] = (rand() % 20) + 1;
cin>>arr[i];
}
for (int i = 0; i < size; i++)
{
cout << arr[i] << " ";
}
cout << endl;
int innerSize=size;
cout << "The sorted array in the asscending order is given as as:" << endl;
for (int i = 0; i < size; i++)
{
for (int j = 0; j < innerSize; j++)
{
int temp = arr[j + 1];
if (arr[j] > arr[j + 1])
{
arr[j + 1] = arr[j];
arr[j] = temp;
}
}
innerSize--;
}
for (int i = 0; i < size; i++)
{
cout << arr[i] << " ";
}
cout << endl;
// cout << sizeof(arr) / sizeof(int); // To check the size of the array that can be given in the array:
return 0;
}
Selection Sort
#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;
int main()
{
int size = 10;
int x = time(0);
srand(x);
int arr[size] = {};
int min_index;
for (int i = 0; i < size; i++)
{
arr[i] = (rand() % 20) + 1;
}
for (int i = 0; i < size; i++)
{
cout << arr[i] << " ";
}
for (int i = 0; i < size - 1; i++)
{
min_index = i;
for (int j = i + 1; j < size; j++)
{
if (arr[j] < arr[min_index])
{
min_index = j;
}
}
int temp;
temp = arr[i];
arr[i] = arr[min_index];
arr[min_index] = temp;
}
cout << endl;
for (int i = 0; i < size; i++)
{
cout << arr[i] << " ";
}
return 0;
}
Insertion Sort
#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;
int main()
{
int x = time(0);
srand(x);
const int size = 10;
int arr[size];
for (int i = 0; i < size; i++)
{
arr[i] = (rand() % 10) + 1;
}
for (int i = 0; i < size; i++)
{
cout << arr[i] << " ";
}
for (int i = 1; i < size; i++)
{
int temp;
if (arr[i] < arr[i - 1])
{
temp = arr[i];
int j = i;
do
{
arr[j] = arr[j - 1];
j--;
} while (j > 0 && arr[j - 1] > temp);
arr[j] = temp;
}
}
cout << endl;
for (int i = 0; i < size; i++)
{
cout << arr[i] << " ";
}
return 0;
}
>2D-Arrays
Write a program to add two matrixes.
#include<iostream>
#include<cstdlib>
#include<ctime>
#include<iomanip>
using namespace std;
int main()
{
int x=time(0);
srand(x);
const int row=5;
const int col=4;
int arr2d[row][col];
int arr2d1[row][col];
int sum[row][col];
int sum1;
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++){
arr2d[i][j]=(rand()%9)+1;
}
}
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++){
arr2d1[i][j]=(rand()%9)+1;
}
}
for(int i=0;i<row;i++)
{
cout<<left;
for(int j=0;j<col;j++){
cout<<setw(5)<<arr2d[i][j];
}
cout<<endl;
}
cout<<endl;
cout<<endl;
for(int i=0;i<row;i++)
{
cout<<left;
for(int j=0;j<col;j++){
cout<<setw(5)<<arr2d1[i][j];
}
cout<<endl;
}
cout<<endl;
cout<<endl;
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
sum1=arr2d[i][j]+arr2d1[i][j];
sum[i][j]=sum1;
}
cout<<endl;
}
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
cout<<left;
cout<<setw(5)<<arr2d[i][j];
}
if(i!=2)
{
cout<<" ";
}
else if(i==2)
{
cout<<"+ ";
}
for(int j=0;j<col;j++)
{
cout<<left;
cout<<setw(5)<<arr2d1[i][j];
}
if(i!=2)
{
cout<<" ";
}
else if(i==2)
{
cout<<"= ";
}
for(int j=0;j<col;j++)
{
cout<<left;
cout<<setw(7)<<sum[i][j];
}
cout<<endl;
}
return 0;
}
Write a C++ program to find the daigonal sum of the matrix.
#include<iostream>
#include<iomanip>
#include<ctime>
#include<cstdlib>
using namespace std;
int main()
{
const int row=4;
const int col=5;
int sum=0;
int board[row][col];
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
board[i][j]=(rand()%9)+1;
}
}
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
cout<<left;
cout<<setw(5)<<board[i][j]<<" ";
}
cout<<endl;
}
cout<<"The diagonal sum is :"<<endl;
for(int i=0;i<row;i++)
{
sum+=board[i][i];
}
cout<<sum;
return 0;
}
Write a C++ Program to find the determinent of a 3x3 by matrix.
#include<iostream>
#include<ctime>
#include<cstdlib>
#include<iomanip>
using namespace std;
int main()
{
const int row=3;
const int col=3;
int x=time(0);
srand(x);
int deter=0;
int a,b,c;
int board[row][col];
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
// board[i][j]=(rand()%9)+1;
cin>>board[i][j];
}
}
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
cout<<left;
cout<<setw(6)<<board[i][j]<<" ";
}
cout<<endl;
}
//for the 2x2 board
if(row==2 && col==2)
{
deter=(board[0][0]*board[1][1])-(board[0][1]*board[1][0]);
cout<<"The determinent = "<<deter<<endl;
}
//for the 3x3
if(row==3 && col==3){
a=(board[1][1]*board[2][2])-(board[1][2]*board[2][1]);
b=(board[1][0]*board[2][2])-(board[1][2]*board[2][0]);
c=(board[1][0]*board[2][1])-(board[1][1]*board[2][0]);
deter=(board[0][0]*a)-(board[0][1]*b)+(board[0][2]*c);
cout<<"The determinent = "<<deter<<endl;
}
else
{
cout<<"We are working on it please wait till:"<<endl;
}
return 0;
}
Write a C++ program for the diagonal interchange.
#include<iostream>
#include<iomanip>
#include<ctime>
#include<cstdlib>
using namespace std;
int main()
{
const int row=5;
const int col=5;
int board[row][col];
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
board[i][j]=(rand()%9)+1;
}
}
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
cout<<left;
cout<<setw(5)<<board[i][j]<<" ";
}
cout<<endl;
}
for(int i=0,j=row-1;i<row && j>=0;i++,j--)
{
int temp;
temp=board[i][i];
board[i][i]=board[i][j];
board[i][j]=temp;
}
cout<<endl;
cout<<"The interchanged board :"<<endl;
cout<<endl;
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
cout<<left;
cout<<setw(5)<<board[i][j]<<" ";
}
cout<<endl;
}
return 0;
}
Write a C++ progarm to find the given matrix is equal matrix or not
#include<iostream>
#include<iomanip>
using namespace std;
int main()
{
int r1,c1,r2,c2;
bool flag=true;
cout<<"Enter the row of board 1:"<<endl;
cin>>r1;
cout<<"Enter the column of board 1:"<<endl;
cin>>c1;
cout<<"Enter the row of board 2:"<<endl;
cin>>r2;
cout<<"Enter the column of board 2:"<<endl;
cin>>c2;
int board1[r1][c1];
int board2[r2][c2];
cout<<"Enter the board 1:"<<endl;
for(int i=0;i<r1;i++)
{
for(int j=0;j<c1;j++)
{
cin>>board1[i][j];
}
}
cout<<"Enter the board 2:"<<endl;
for(int i=0;i<r2;i++)
{
for(int j=0;j<c2;j++)
{
cin>>board2[i][j];
}
}
cout<<"board 1 is as:"<<endl;
for(int i=0;i<r1;i++)
{
for(int j=0;j<c1;j++)
{
cout<<left;
cout<<setw(5)<<board1[i][j]<<" ";
}
cout<<endl;
}
cout<<"board 2 is as:"<<endl;
for(int i=0;i<r2;i++)
{
for(int j=0;j<c2;j++)
{
cout<<left;
cout<<setw(5)<<board2[i][j]<<" ";
}
cout<<endl;
}
//comparing
if(r1!=r2 || c1!=c2)
{
cout<<"Both boardes are unequal:"<<endl;
}
else
{
for(int i=0;i<r1;i++)
{
for(int j=0;j<c1;j++)
{
if(board1[i][j]!=board2[i][j])
{
flag=false;
}
}
}
if(flag==false)
{
cout<<"Both boardes are unequal:"<<endl;
}
if(flag==true)
{
cout<<"Both boardes are equal:"<<endl;
}
}
return 0;
}
Write a C++ program to check the given matrix is identity matrix or not.
#include<iostream>
#include<ctime>
#include<cstdlib>
#include<iomanip>
using namespace std;
int main()
{
const int row=3;
const int col=3;
int x=time(0);
srand(x);
bool flag =true;
int board[row][col];
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
// board[i][j]=(rand()%9)+1;
cin>>board[i][j];
}
}
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
cout<<left;
cout<<setw(6)<<board[i][j]<<" ";
}
cout<<endl;
}
for(int i=0;i<row;i++)
{
if(board[i][i]!=1)
{
flag=false;
}
for(int j=i+1;j<col;j++)
{
if(board[i][j]!=0)
{
flag=false;
}
}
}
for(int i=1;i<row;i++)
{
for(int j=0;j<i;j++)
{
if(board[i][j]!=0)
{
flag=false;
}
}
}
if(flag==false)
{
cout<<"It is not an identity board:"<<endl;
}
if(flag==true)
{
cout<<"It is an identity board:"<<endl;
}
return 0;
}
Write a C++ progarm to check given matrix is lower traingular matrix or not.
#include<iostream>
#include<iomanip>
#include<ctime>
#include<cstdlib>
using namespace std;
int main()
{
const int row=3;
const int col=3;
bool flag=true;
int board[row][col];
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
// board[i][j]=(rand()%9)+1;
cin>>board[i][j];
}
}
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
cout<<left;
cout<<setw(5)<<board[i][j]<<" ";
}
cout<<endl;
}
for(int i=0;i<row;i++)
{
for(int j=i+1;j<row;j++)
{
if(board[i][j]!=0)
{
flag=false;
}
}
}
if(flag==false)
{
cout<<"It is not an lower triangular board:"<<endl;
}
if(flag==true)
{
cout<<"It is an lower triangular board:"<<endl;
}
return 0;
}
Write a C++ Progarm to find out the minor diagonal sum of the matrix.
#include<iostream>
#include<iomanip>
#include<ctime>
#include<cstdlib>
using namespace std;
int main()
{
const int row=3;
const int col=3;
int sum=0;
int board[row][col];
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
board[i][j]=(rand()%9)+1;
}
}
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
cout<<left;
cout<<setw(5)<<board[i][j]<<" ";
}
cout<<endl;
}
cout<<"The minor diagonal sum is :"<<endl;
for(int i=row-1,j=0;i>=0 && j<row;i--,j++)
{
sum+=board[j][i];
}
cout<<sum;
return 0;
}
Write a C++ program to Multiply two matrixes.
#include<iostream>
#include<cstdlib>
#include<ctime>
#include<iomanip>
using namespace std;
int main()
{
int x=time(0);
srand(x);
int r1,c1;
int r2,c2;
int multi1,multi2;
cout<<"Enter the number of rows of first board:"<<endl;
cin>>r1;
cout<<"Enter the number of columns of first board:"<<endl;
cin>>c1;
cout<<"Enter the number of rows of secind board:"<<endl;
cin>>r2;
cout<<"Enter the number of columns of secind board:"<<endl;
cin>>c2;
/*It is must that the number of columns of first board
is equal to the number of rows of second board*/
while(c1!=r2)
{
cout<<"Invalid input!"<<endl;
cout<<"Again Enter "<<endl;
cout<<"Enter the number of rows of first board:"<<endl;
cin>>r1;
cout<<"Enter the number of columns of first board:"<<endl;
cin>>c1;
cout<<"Enter the number of rows of secind board:"<<endl;
cin>>r2;
cout<<"Enter the number of columns of secind board:"<<endl;
cin>>c2;
}
int board1[r1][c1];
int board2[r2][c2];
/*Resultant board has number of rows equal to the board_1 rows
And number of columns equal to the board_2 columns*/
int multi[r1][c2]={0};
//Input for the board 1
for(int i=0;i<r1;i++)
{
for(int j=0;j<c1;j++)
{
// board1[i][j]=(rand()%9)+1;
cin>>board1[i][j];
}
}
//Display board 1
//Display
cout<<"board 1 :"<<endl;
for(int i=0;i<r1;i++)
{
for(int j=0;j<c1;j++)
{
cout<<left;
cout<<setw(5)<<board1[i][j];
}
cout<<endl;
}
cout<<endl;
//Input for the board-2
for(int i=0;i<r2;i++)
{
for(int j=0;j<c2;j++)
{
// board2[i][j]=(rand()%9)+1;
cin>>board2[i][j];
}
}
//Display board 2
cout<<"board 2:"<<endl;
for(int i=0;i<r2;i++)
{
for(int j=0;j<c2;j++)
{
cout<<left;
cout<<setw(5)<<board2[i][j];
}
cout<<endl;
}
cout<<endl;
//multiplication of board 1 with board 2
for(int i=0;i<r1;i++)
{
for(int j=0;j<c2;j++)
{
for(int k=0;k<c1;k++)
{
multi[i][j]+=board1[i][k]*board2[k][j];
}
}
}
//Display multiplication
cout<<"Multiplication board1*board2:"<<endl;
for(int i=0;i<r1;i++)
{
for(int j=0;j<c2;j++)
{
cout<<left;
cout<<setw(5)<<multi[i][j];
}
cout<<endl;
}
return 0;
}
Write a C++ Program to check the given marix is scalar or not.
#include <iostream>
#include <cstdlib>
#include <ctime>
#include <iomanip>
using namespace std;
int main()
{
const int row = 5;
const int col = 5;
int arr[row][col];
int num;
for (int i = 0; i < row; i++)
{
for (int j = 0; j < col; j++)
{
arr[i][j] = rand() % 9;
}
}
cout << "The board is given as:" << endl;
for (int i = 0; i < row; i++)
{
cout << left;
for (int j = 0; j < col; j++)
{
cout << setw(5) << arr[i][j];
}
cout << endl;
}
cout << endl;
cout << "Enter the number that you want to multiplay:" << endl;
cin >> num;
cout << endl;
for (int i = 0; i < row; i++)
{
cout << left;
for (int j = 0; j < col; j++)
{
cout << setw(5) << (num * arr[i][j]);
}
cout << endl;
}
return 0;
}
Write a C++ program to check whether the given matrix is upper traingular matrix or not.
#include<iostream>
#include<iomanip>
#include<ctime>
#include<cstdlib>
using namespace std;
int main()
{
const int row=3;
const int col=3;
bool flag=true;
int board[row][col];
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
// board[i][j]=(rand()%9)+1;
cin>>board[i][j];
}
}
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
cout<<left;
cout<<setw(5)<<board[i][j]<<" ";
}
cout<<endl;
}
for(int i=1;i<row;i++)
{
for(int j=0;j<i;j++)
{
if(board[i][j]!=0)
{
flag=false;
}
}
}
if(flag==false)
{
cout<<"It is not an upper triangular board:"<<endl;
}
if(flag==true)
{
cout<<"It is an upper triangular board:"<<endl;
}
return 0;
}
Write a C++ program to find the transpose of a matrix.
#include<iostream>
#include<iomanip>
#include<ctime>
#include<cstdlib>
using namespace std;
int main()
{
const int row=4;
const int col=6;
int board[row][col];
int sum=0;
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
board[i][j]=(rand()%9)+1;
// cin>>board[i][j];
}
}
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
cout<<left;
cout<<setw(5)<<board[i][j]<<" ";
}
cout<<endl;
}
cout<<"The transpose of the board :"<<endl;
for(int i=0;i<col;i++)
{
for(int j=0;j<row;j++)
{
cout<<left;
cout<<setw(5)<<board[j][i]<<" ";
}
cout<<endl;
}
return 0;
}
Write a C++ program to find the sum of the upper traingular matrix.
#include<iostream>
#include<iomanip>
#include<ctime>
#include<cstdlib>
using namespace std;
int main()
{
const int row=3;
const int col=3;
int board[row][col];
int sum=0;
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
// board[i][j]=(rand()%9)+1;
cin>>board[i][j];
}
}
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
cout<<left;
cout<<setw(5)<<board[i][j]<<" ";
}
cout<<endl;
}
cout<<"The sum of the upper traingle board :"<<endl;
for(int i=0;i<row;i++)
{
for(int j=i+1;j<col;j++)
{
sum+=board[i][j];
}
}
cout<<sum;
return 0;
}
Write a C++ program to find the sum of the lower traingular matrix.
#include<iostream>
#include<iomanip>
#include<ctime>
#include<cstdlib>
using namespace std;
int main()
{
const int row=3;
const int col=3;
int board[row][col];
int sum=0;
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
// board[i][j]=(rand()%9)+1;
cin>>board[i][j];
}
}
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
cout<<left;
cout<<setw(5)<<board[i][j]<<" ";
}
cout<<endl;
}
cout<<"The sum of the upper traingle board :"<<endl;
for(int i=1;i<row;i++)
{
for(int j=i-1;j>=0;j--)
{
sum+=board[i][j];
}
}
cout<<sum;
return 0;
}
3D-Arrays
Initalization and printing
#include<iostream>
#include<iomanip>
#include<cstdlib>
#include<ctime>
using namespace std;
int main()
{
int x=time(0);
srand(x);
const int row=10;
const int col=10;
const int z=10;
int three_D[row][col][z];
//input
for(int k=0;k<z;k++)
{
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
three_D[i][j][k]=(rand()%9)+1;
// cin>>three_D[i][j][k];
}
}
}
//output
for(int k=0;k<z;k++)
{
cout<<"Matrix "<<k+1<<" :"<<endl;
for(int i=0;i<row;i++)
{
for(int j=0;j<col;j++)
{
cout<<left;
cout<<setw(5)<<three_D[i][j][k]<<" ";
}
cout<<endl;
}
cout<<endl;
cout<<endl;
}
return 0;
}
</code></pre>
</div>
</div>
</div>
<h1 id="under-commands">Character Arrays</h1>
<div class="col-6">
<div class="row-6-1">
<h2>Wrire a C++ Program to find the Vowels,Cononants,Symbols ,numbers in the array.</h2>
<div class="code18">
<pre><code class="language-cpp">
<xmp>
#include<iostream>
#include<cstring>
using namespace std;
int main()
{
int size=100;
char ch[size];
cin.getline(ch,size);
int alphabtes;
int symboles;
int numbers;
int vowels;
int consonants;
for(int i=0;ch[i]!='\0';i++)
{
if((ch[i]>='a' && ch[i]<='z') ||(ch[i]>='A'&&ch[i]<='Z'))
{
alphabtes++;
}
else if(ch[i]>='0' && ch[i]<='9')
{
numbers++;
}
else
{
symboles++;
}
if(ch[i]=='a'|| ch[i]=='i'||ch[i]=='e'||ch[i]=='o'||ch[i]=='u')
{
vowels++;
}
else
{
consonants++;
}
}
cout<<alphabtes<<endl;
cout<<numbers<<endl;
cout<<symboles<<endl;
cout<<vowels<<endl;
cout<<consonants-symboles-numbers<<endl;
return 0;
}
Write a C++ program in character array to find out which charracter string is greater(Comparing of two strings).
#include<iostream>
#include<cstring>
using namespace std;
int main()
{
//it is basically works on the ascii values
int size=100;
char ch1[size];
char ch2[size];
int result;
cin.getline(ch1,size);
cin.getline(ch2,size);
result= strcmp(ch1,ch2);
switch(result)
{
case -1:
{
cout<<ch2<<" is greater than "<<ch1<<endl;
break;
}
case 1:
{
cout<<ch1<<" is greater than "<<ch2<<endl;
break;
}
case 0:
{
cout<<ch1<<" and "<<ch1<<" both are equal to each other."<<endl;
break;
}
}
return 0;
}
Concatination of two character strings
#include<iostream>
#include<cstring>
using namespace std;
int main()
{
int size=100;
char ch1[size];
char ch2[size];
cin.getline(ch1,size);
cin.getline(ch2,size);
strcat(ch1,ch2);
strncat(ch1,ch2,5);
strcat(ch1,"Muhib");
cout<<ch1; return 0; }
C++ progarm to copy one character string into another (methods)
#include<iostream>
#include<cstring>
using namespace std;
int main()
{
int size=100;
char arr1[size];
char arr2[size];
cin.getline(arr1,size);
cin.getline(arr2,size);
strcpy(arr1,arr2);
strncpy(arr1,arr2,5);
strcpy(arr1,"Muhib Arshad");
cout<<arr1; return 0; }
//Copy with the for loop
#include<iostream>
#include<cstring>
using namespace std;
int main()
{
int size=100;
char arr1[size];
char arr2[size];
cin.getline(arr1,size);
cin.getline(arr2,size);
for(int i=0;arr2[i]!='\0';i++)
{
arr1[i]=arr2[i];
}
cout<<arr1; return 0; }
Write a C++ progarm to find out how many times the given word is repeated in the character string.
#include<iostream>
using namespace std;
int main()
{
int size=100;
char ch[size];
char se;
int count=0;
cin.getline(ch,size);
cout<<"Enter the count character :"<<endl;
cin>>se;
for(int i=0;ch[i]!='\0';i++)
{
if(ch[i]==se)
{
count++;
}
}
cout<<se<<" count is "<<count<<endl;
return 0;
}
Write a C++ program to find index at which the first occurance of a letter in a string
#include<iostream>
using namespace std;
int main()
{
int size=100;
char ch[size];
char se;
int index;
cin.getline(ch,size);
cout<<"Enter the first occurance character :"<<endl; cin>>se;
bool flag =false;
for(int i=0;ch[i]!='\0' && flag==true;i++)
{
if(ch[i]==se)
{
index=i;
flag=true;
}
}
cout<<"The character "<<se<<" firstly occures at the "<<index<<" index :"<<endl; }
Write a C++ program to find the occurance of each letter in a sentence.
#include<iostream>
using namespace std;
int main()
{
const int size=100;
char ch[size];
int arr[size]={0};
int count=0;
int index=0;
int max;
cout<<"Eneter the character string:"<<endl;
cin.getline(ch,size);
for(int i=0;ch[i]!='\0';i++)
{
count=1;
for(int j=i+1;ch[j]!='\0';j++)
{
if(ch[i]==ch[j])
{
count++;
arr[j]=-1;
}
}
if(arr[i]!=-1)
{
arr[i]=count;
}
}
max=arr[0];
for(int i=0;ch[i]!='\0';i++)
{
if(arr[i]!=-1)
{
cout<<ch[i]<<" is repeated "<<arr[i]<<" times "<<endl;
}
}
return 0;
}
Write a C++ prorgram to find the highest frequency of a letter in a character string.
#include<iostream>
using namespace std;
int main()
{
const int size=100;
char ch[size];
int arr[size]={0};
int count=0;
int index=0;
int max;
cout<<"Eneter the character string:"<<endl; cin.getline(ch,size); for(int
i=0;ch[i]!='\0' ;i++) { count=1; for(int j=i+1;ch[j]!='\0' ;j++) { if(ch[i]==ch[j])
{ count++; arr[j]=-1; } } if(arr[i]!=-1) { arr[i]=count; } } max=arr[0]; for(int
i=0;i<size;i++) { if(arr[i]>max)
{
max=arr[i];
index=i;
}
}
cout<<"The highest frequency of the character in the string is "<<ch[index]<<endl;
return 0;
}
Write a C++ program to find the at which last index the given letter exist in a character string.
#include<iostream>
using namespace std;
int main()
{
int size=100;
char ch[size];
char se;
int index;
cin.getline(ch,size);
cout<<"Enter the occurance character :"<<endl;
cin>>se;
cout<<"The character "<<se<<" occures at the ";
for(int i=0;ch[i]!='\0';i++)
{
if(ch[i]==se)
{
index=i;
cout<<index<<" index : and";
}
}
return 0;
}
Write a C++ program to remove the given letter at ist last occurance in a character string.
#include <iostream>
using namespace std;
int main()
{
int size = 100;
char ch[size];
char toremove;
cin.getline(ch, size);
for (int i = 0; ch[i] != '\0'; i++)
{
if (isupper(ch[i]))
{
ch[i] = tolower(ch[i]);
}
}
int index = 0;
cout << "Enter the character that you want to remove its first occurance:" << endl; cin>
> toremove;
toremove = tolower(toremove);
cin.ignore();
for (int i = 0; ch[i] != '\0'; i++)
{
if (ch[i] == toremove)
{
index = i;
}
}
for (int j = index; ch[j + 1] != '\0'; j++)
{
ch[j] = ch[j + 1];
}
for (int i = 0; ch[i + 1] != '\0'; i++)
{
cout << ch[i]; } return 0; }
Write a C++ program to find the length of a string.
#include<iostream>
using namespace std;
int main()
{
int size;
cin>>size;
cin.ignore();
char ch[size];
cin.getline(ch,size);
int count=0;
for(int i=0;ch[i]!='\0';i++){
count++;
}
cout<<count<<" ";
return 0;
}
Write a C++ program to convert the all lowerCase letters to Uppercase letters.
#include<iostream>
#include<cstring>
using namespace std;
int main()
{
//it is basically works on the ascii values
int size=100;
char ch1[size];
cin.getline(ch1,size);
for(int i=0;i<size;i++)
{
if(islower(ch1[i]))
{
ch1[i]=toupper(ch1[i]);
}
}
cout<<ch1;
return 0;
}
Write a C++ program to find the lowest occurance of a letter in a character string.
#include<iostream>
using namespace std;
int main()
{
const int size=100;
char ch[size];
int arr[size]={0};
int count=0;
int index=0;
int min;
int lowest[size]={};
cout<<"Eneter the character string:"<<endl;
cin.getline(ch,size);
for(int i=0;ch[i]!='\0';i++)
{
count=1;
for(int j=i+1;ch[j]!='\0';j++)
{
if(ch[i]==ch[j])
{
count++;
arr[j]=2;
}
}
if(arr[i]!=2)
{
arr[i]=count;
}
}
min=arr[0];
for(int i=0;i<size;i++)
{
if(arr[i]==1)
{
lowest[i]=ch[i];
}
}
cout<<"The lowest frequency characters in the string is ";
for(int i=0;i<sizeof(lowest)/sizeof(int);i++)
{
if(lowest[i]!=0)
{
cout<<char(lowest[i])<<" ";
}
}
return 0;
}
Write a C++ program to find out given word is palindrome or not.
#include<iostream>
#include<cstring>
using namespace std;
int main()
{
int size=100;
char ch[size];
cin.getline(ch,size);
int length=strlen(ch)-1;
bool flag =true;
int k=0;
while(ch[k]!='\0')
{
ch[k]=tolower(ch[k]);
k++;
}
for(int i=0,j=length;ch[i]!='\0';i++,j--)
{
if(ch[i]!=ch[j])
{
flag=false;
}
}
if(flag==false)
{
cout<<"It is not a palindrome!"<<endl;
}
if(flag==true)
{
cout<<"It is a palindrome!"<<endl;
}
return 0;
}
Write a C++ program to remove the fist occurance of a letter at index.
#include<iostream>
using namespace std;
int main()
{
int size=100;
char ch[size];
char toremove;
cin.getline(ch,size);
for(int i=0;ch[i]!='\0';i++)
{
if(isupper(ch[i]))
{
ch[i]=tolower(ch[i]);
}
}
bool flag=false;
cout<<"Enter the character that you want to remove its first occurance:"<<endl; cin>
>toremove;
toremove=tolower(toremove);
cin.ignore();
for(int i=0;(ch[i]!='\0') && flag==false;i++)
{
if(ch[i]==toremove)
{
for(int j=i;ch[j+1]!='\0';j++)
{
ch[j]=ch[j+1];
}
flag=true;
}
}
for(int i=0;ch[i+1]!='\0';i++)
{
cout<<ch[i]; } return 0; }
Write a C++ program to reverse the given character string.
#include<iostream>
#include<cstring>
using namespace std;
int main()
{
int size=100;
char ch[size];
char reverse[size];
int x;
cin.getline(ch,size);
x=strlen(ch);
int i=0,j=x-1;
while(ch[i]!='\0')
{
reverse[i]=ch[j];
i++;
j--;
}
cout<<reverse; return 0; }
Write a C++ program to convert all the letters of the character string into the toggle case.
#include<iostream>
#include<cstring>
using namespace std;
int main()
{
int size=100;
char ch[size];
int count=0;
cin.getline(ch,size);
for(int i=0;ch[i]!='\0';i++)
{
if(islower(ch[i]))
{
ch[i]=toupper(ch[i]);
}
else if(isupper(ch[i]))
{
ch[i]=tolower(ch[i]);
}
}
cout<<ch; return 0; }
Write a C++ program to find the total letters in the character string.
#include<iostream>
#include<cstring>
using namespace std;
int main()
{
int size=100;
char ch[size];
cin.getline(ch,size);
int count=0;
for(int i=0;ch[i]!='\0';i++)
{
if(ch[i]==' ')
{
count++;
}
}
cout<<count+1<<endl; return 0; }
Write a C++ Program to revres the words in the string.
#include <iostream>
#include <cstring>
using namespace std;
int main()
{
int size = 100;
char ch[size];
char reverse[size];
int x;
int length;
cin.getline(ch, size);
x = strlen(ch);
length = x - 1;//get lenghth without null character
int z = 0;//index of reverse array
int i = 0, j = length;//j backward jany ka ly
while (ch[i] != ch[x])//jab tak last index of array nhi ajata
{
if (ch[j] == ' ' || ch[j] == ch[0])//agr j barabar space ka or ya j barabar hai first
index ka
{
if (ch[j] != ch[0])//agr ch[j] first index ka barabr nhi hai
{
int k = j + 1;//new variable k takh space sa agy ka indexs ko revers array ma copy
karwa saky ,+1 is ley takh space sa agy sa start ho
while (ch[k] != ' ' && ch[k] != '\0')//ch[k] agr space nhi or ch[k] null akhri wala
bhi nhi hai
{
//kia kary
reverse[z] = ch[k];//reverse array ka first to onward indexes ma wo ch[k] ko copy
karta jay
k++;//k ko agy next index pa la jay
z++;// reverse array ka index ko bhi next move kary
if (ch[k] == ' ' || ch[k] == '\0')//ch[k] agr space hai or ch[k] null akhri wala bhi
nhi hai to
{
reverse[z] = ' ';//reverse ka z index ko space assign kar de
z++;//reverse array index ++ ho jay takh usma space na ay
}
}
}
if (ch[j] == ch[0])//agr ch[j] first index hai
{
int m=z;
int l=0;
while(ch[l]!=' '){
reverse[z] = ch[l];//reverse z ko ch[0] kar de
m++;
z++;
l++;
}
}
}
i++, j--;//ch indexes ko move kary sath hi j akhri index ko bacward bhi chalay
}
reverse[x] = '\0';//jasy hi loop ruky reverse ka x last index ko null kar de takh
array stop ho jay
cout << reverse; return 0; }
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