#1010
Pairs of Songs With Total Durations Divisible by 60
specialist · 815 · lc medium +31 · verified · 53.4% accepted · 4,326 likes · top 44%
Description
You are given a list of songs where time[i] is the duration of the ith song in seconds.
Return the number of index pairs (i, j) with i < j such that (time[i] + time[j]) % 60 == 0.
Example 1:
Input: time = [30,20,150,100,40]
Output: 3
Explanation: Three pairs have a total duration divisible by 60:
(time[0] = 30, time[2] = 150): total duration 180
(time[1] = 20, time[3] = 100): total duration 120
(time[1] = 20, time[4] = 40): total duration 60
Example 2:
Input: time = [60,60,60]
Output: 3
Explanation: All three pairs have a total duration of 120, which is divisible by 60.
Code
1
2
3