Pairs of songs with total duration divisible by 60

class Solution {
    public int numPairsDivisibleBy60(int[] time) {
        int[] counts=new int[60];
        for(int i=0; i<time.length; i++){
            counts[time[i]%60]++;
        }
        int i=1;
        int j=59;
        int ans=0;
        while(i<j){
            ans+=(counts[i]*counts[j]);
            i++;
            j--;
        }
         ans+=((counts[0]*(counts[0]-1))/2+(counts[30]*(counts[30]-1))/2);
        return ans;
    }
}
#Status: Solved