C Exercises: Find the maximum repeating number in a given array

C Array: Exercise-81 with Solution

Write a program in C to find the maximum repeating number in a given array. The array range is [0..n-1] and the elements are in the range [0..k-1] and k<=n.

Sample Solution:

C Code:

#include <stdio.h>
int numToRepeatMax(int* arr1 , int n, int k)
{
    int mx = arr1[0], result = 0;
	for (int i = 0; i< n; i++)
        arr1[arr1[i]%k] += k;

    for (int i = 1; i < n; i++)
    {
        if (arr1[i] > mx)
        {
            mx = arr1[i];
            result = i;
        }
    }
    return result;
}

int main()
{
    int arr1[] = {2, 3, 3, 5, 3, 4, 1, 7, 7, 7, 7};
    int n = sizeof(arr1)/sizeof(arr1[0]);
	int i;
 //------------- print original array ------------------	
	printf("The given array is:  \n");
	for(i = 0; i < n; i++)
		{
			printf("%d  ", arr1[i]);
		}
	printf("\n");
//------------------------------------------------------ 	
    int k = 8;
    printf("The maximum repeating number is: %d", numToRepeatMax(arr1, n, k));
    return 0;
}

Sample Output:

The given array is:  
2  3  3  5  3  4  1  7  7  7  7  
The maximum repeating number is: 7

Flowchart:

C Programming Code Editor:

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