Package g1001_1100.s1010_pairs_of_songs_with_total_durations_divisible_by_60

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    1010 - Pairs of Songs With Total Durations Divisible by 60.

    Medium

    You are given a list of songs where the <code>i<sup>th</sup></code> song has a duration of time[i] seconds.

    Return the number of pairs of songs for which their total duration in seconds is divisible by 60. Formally, we want the number of indices i, j such that i &lt; j with (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:

    (time0 = 30, time2 = 150): total duration 180

    (time1 = 20, time3 = 100): total duration 120

    (time1 = 20, time4 = 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.

    Constraints:

    • <code>1 <= time.length <= 6 * 10<sup>4</sup></code>

    • 1 &lt;= time[i] &lt;= 500

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description
      Solution()

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      final Integer numPairsDivisibleBy60(IntArray time)

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait