Best & Easiest 4 Lines of Code in Java Beast 99.9% 💯
Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time 
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\n\n# Code\n```\nimport java.util.*;\nclass Solution {\n    public int countPairs(int[] nums, int k) {\n        int count = 0;\n        for(int i = 0; i<nums.length; i++){\n            for(int j = i+1; j<nums.length; j++){\n                if(nums[i]==nums[j] && i*j % k==0) count++;\n            }\n        } return count;\n    }\n}\n```
['Java']