MODA

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#define SIZE 20

int getMode(int* A)
{
    int maxNumIndex = 0;
    for (int i = 1; i < SIZE; i++)
        if (A[i] > A[maxNumIndex])
            maxNumIndex = i;

    int* B = new int[A[maxNumIndex]];
    for (int i = 0; i < A[maxNumIndex]; i++)
        B[i] = 0;

    for (int i = 0; i < A[maxNumIndex]; i++)
        B[A[i]]++;

    int modeIndex = 0;
    for (int i = 1; i < SIZE; i++)
        if (B[i] > B[modeIndex])
            modeIndex = i;

    return modeIndex;
}

int main()
{
    srand(time(NULL));

    int* A = new int[SIZE];
    for (int i = 0; i < SIZE; i++)
    {
        A[i] = (1 + rand() % 20); // [0:20]
        printf("%4d", A[i]);
        if (i % 10 == 0) printf("\n");
    }
    printf("\n");

    printf("Mode is:\t%d\n", A[getMode(A)]);

    system("PAUSE");
    return 0;
}