var maxConsecutiveAnswers = function(answerKey, k) { let [left, right, numOfTrue, numOfFalse, max] = new Array(5).fill(0); const moreChanges = () => numOfTrue > k && numOfFalse > k; while (right < answerKey.length) { if(answerKey[right] === 'T') numOfTrue++; if(answerKey[right] === 'F') numOfFalse++; while(moreChanges()) { if(answerKey[left] === 'T') numOfTrue--; if(answerKey[left] === 'F') numOfFalse--; left++; } max = Math.max(max, right - left + 1); right++; } return max; };

class Solution {

    /**
     * @param Integer[] $nums
     * @param Integer $target
     * @return Integer[]
     */
    function twoSum($nums, $target) {
        $hash = [];
        foreach ($nums as $i => $value) {
            $complement = $target - $value;
            if (isset($hash[$complement])) {
                return [$hash[$complement], $i];
            }
            $hash[$value] = $i;
        }
    }
}