众数问题

#include<stdio.h>

#define n 8 

int num;

int largest = 1;

void sort(int a[]){//对数组进行排序 
int i,j;
int temp;
for(i = 0;i < n;i ++){
for(j = 0;j < n - i - 1;j ++){
if(a[j + 1] < a[j]){
temp = a[j];
a[j] = a[j + 1];
a[j + 1] = temp; 
}
}
}

}

int compute(int a[],int left,int right){
int mid = (left + right) / 2;
int median = a[mid];
int l1,r1;//mid左边的数记为l1,mid右边的数记为r1 
l1 = r1 = mid;
while(a[l1] == median)
l1 --;
while(a[r1] == median)
r1 ++;
if(r1 - l1 - 1 > largest){
num = median;
largest = r1 - l1 - 1;
}
if(l1 - left + 1 > largest){
compute(a,left,l1);
}
if(right - r1 + 1 > largest){
compute(a,r1,right);
}
return 0;

}

int main()

{
int i;
int a
= {1,2,3,3,4,3,3,5};
sort(a);
compute(a,0,n - 1);
printf("%d %d",num,largest);
putchar('\n');
return 0;

}