Package g2301_2400.s2364_count_number_of_bad_pairs

Class Solution

java.lang.Object
g2301_2400.s2364_count_number_of_bad_pairs.Solution
public class Solution extends java.lang.Object
2364 - Count Number of Bad Pairs.

Medium

You are given a 0-indexed integer array nums. A pair of indices (i, j) is a bad pair if i < j and j - i != nums[j] - nums[i].

Return the total number of bad pairs in nums.

Example 1:

Input: nums = [4,1,3,3]

Output: 5

Explanation:

The pair (0, 1) is a bad pair since 1 - 0 != 1 - 4.

The pair (0, 2) is a bad pair since 2 - 0 != 3 - 4, 2 != -1.

The pair (0, 3) is a bad pair since 3 - 0 != 3 - 4, 3 != -1.

The pair (1, 2) is a bad pair since 2 - 1 != 3 - 1, 1 != 2.

The pair (2, 3) is a bad pair since 3 - 2 != 3 - 3, 1 != 0.

There are a total of 5 bad pairs, so we return 5.

Example 2:

Input: nums = [1,2,3,4,5]

Output: 0

Explanation: There are no bad pairs.

Constraints:

  • 1 <= nums.length <= 105
  • 1 <= nums[i] <= 109

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    long
    countBadPairs(int[] nums)
     

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • countBadPairs

      public long countBadPairs(int[] nums)