Update 1754-largest-merge-of-two-strings.js

Author: everthis

1754-largest-merge-of-two-strings.js

@@ -1,3 +1,40 @@
+/**
+ * @param {string} word1
+ * @param {string} word2
+ * @return {string}
+ */
+var largestMerge = function(word1, word2) {
+    let merge = "";
+    
+    while(word1.length && word2.length) {
+        if (word1[0] > word2[0]) {
+            merge += word1[0];
+            word1 = word1.slice(1);
+        } else if (word1[0] < word2[0]) {
+            merge += word2[0];
+            word2 = word2.slice(1);
+        } else {
+            if (word1 > word2) {
+                merge += word1[0];
+                word1 = word1.slice(1);
+            } else {
+                merge += word2[0];
+                word2 = word2.slice(1);
+            }
+        }
+    }
+    
+    if (word1.length) {
+        merge += word1;
+    } else if (word2.length) {
+        merge += word2;
+    }
+    
+    return merge;  
+};
+
+// another
+
 /**
  * @param {string} word1
  * @param {string} word2