Pairs of Songs With Total Durations Divisible by 60

PairsOfSongsDivisibleBy60.java

//https://leetcode.com/problems/pairs-of-songs-with-total-durations-divisible-by-60/
class Solution {
    public int numPairsDivisibleBy60(int[] time) {
        int n = time.length, count = 0;
        for(int i=0;i<n;i++)       time[i] %= 60;
        Map<Integer, Integer> visited = new HashMap<>();
        for(int i=0;i<n;i++){
            int value = (60-time[i])%60;
            if(visited.containsKey(value)){
                count += visited.get(value);
            }
            visited.put(time[i], visited.getOrDefault(time[i], 0) + 1);
        }
        return count;
    }
}