count-number-of-pairs-with-absolute-difference-k_0302.html

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    <title>count-number-of-pairs-with-absolute-difference-k</title>
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<script>
const nums = [1,2,2,1];
const k = 1

console.log(countKDifference(nums, k))
/**
 * @param {number[]} nums
 * @param {number} k
 * @return {number}
 */
function countKDifference(nums, k) {
    let count = 0;
    for(let i = 0; i < nums.length; i++) {
        for(let j = i+1; j < nums.length; j ++) {
            if(Math.abs(nums[i] - nums[j]) === k) count++
        }
    }
    return count
};
</script>
</html>