[코테 풀이] Number of Good Pairs

Q_1512) Number of Good Pairs

출처 : https://leetcode.com/problems/number-of-good-pairs/

Given an array of integers nums, return the number of good pairs.

A pair (i, j) is called good if nums[i] == nums[j] and i < j.

class Solution {
    public int numIdenticalPairs(int[] nums) {
        int count = 0;
        for (int i = 0; i < nums.length - 1; i++) {
            for (int j = i + 1; j < nums.length; j++) {
                if (nums[i] == nums[j]) {
                    count++;
                }
            }
        }
        return count;
    }
}