find duplicate in an array using xor
int DuplicateNumber(int arr[], int size){
int ans=0;
for(int i=0;i<size;i++){
ans= ans ^ arr[i] ;
}
for(int i=0;i<=size-2;i++){
ans= ans ^ i;
}
return ans;
}find duplicate in an array using xor
int DuplicateNumber(int arr[], int size){
int ans=0;
for(int i=0;i<size;i++){
ans= ans ^ arr[i] ;
}
for(int i=0;i<=size-2;i++){
ans= ans ^ i;
}
return ans;
}hopw to check how many duplicates in an array c
/**
* C program to count total number of duplicate elements in an array
*/
#include <stdio.h>
#define MAX_SIZE 100 // Maximum array size
int main()
{
int arr[MAX_SIZE];
int i, j, size, count = 0;
/* Input size of array */
printf("Enter size of the array : ");
scanf("%d", &size);
/* Input elements in array */
printf("Enter elements in array : ");
for(i=0; i<size; i++)
{
scanf("%d", &arr[i]);
}
/*
* Find all duplicate elements in array
*/
for(i=0; i<size; i++)
{
for(j=i+1; j<size; j++)
{
/* If duplicate found then increment count by 1 */
if(arr[i] == arr[j])
{
count++;
break;
}
}
}
printf("nTotal number of duplicate elements found in array = %d", count);
return 0;
}Copyright © 2021 Codeinu
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