Longest Consecutive Sequence solution

Author: yuhyeon99

longest-consecutive-sequence/yuhyeon99.js

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+/**
+ * @param {number[]} nums
+ * @return {number}
+ */
+var longestConsecutive = function(nums) {
+    if(!nums.length) return 0;
+
+    nums.sort((a, b) => a - b);
+    var answer = 0;
+    var length = 1;
+    for(let i = 0; i < nums.length - 1; i ++) {
+        if(nums[i] === nums[i + 1]) {
+            continue;
+        } else if (nums[i] + 1 === nums[i + 1]) {
+            length ++;
+        } else {
+            answer = Math.max(length, answer);
+            length = 1;
+        }
+    }
+
+    answer = Math.max(length, answer);
+
+    return answer;
+};