Update 646-maximum-length-of-pair-chain.js

Author: everthis

646-maximum-length-of-pair-chain.js

@@ -1,3 +1,23 @@
+/**
+ * @param {number[][]} pairs
+ * @return {number}
+ */
+var findLongestChain = function(pairs) {
+    pairs.sort((a, b) => a[1] - b[1]);
+    if(pairs.length === 0) return 0
+    let res = 1
+    let end = pairs[0][1]
+    for(let i = 1; i < pairs.length; i++) {
+        if(pairs[i][0] > end) {
+            res++
+            end = pairs[i][1]
+        }
+    }
+    return res
+};
+
+// another
+
 /**
  * @param {number[][]} pairs
  * @return {number}