Merge pull request #2690 from AHTHneeuhl/1768

Author: aakhtar3

javascript/1768-merge-strings-alternately.js

@@ -0,0 +1,13 @@
+// Time complexity: O(n)
+// Space complexity: O(n)
+
+var mergeAlternately = function (word1, word2) {
+    const buffer = [];
+
+    for (let i = 0; i < word1.length || i < word2.length; i++) {
+        if (i < word1.length) buffer.push(word1[i]);
+        if (i < word2.length) buffer.push(word2[i]);
+    }
+
+    return buffer.join('');
+};

typescript/1768-merge-strings-alternately.ts

@@ -0,0 +1,13 @@
+// Time complexity: O(n)
+// Space complexity: O(n)
+
+function mergeAlternately(word1: string, word2: string): string {
+    const buffer: Array<string> = [];
+
+    for (let i = 0; i < word1.length || i < word2.length; i++) {
+        if (i < word1.length) buffer.push(word1[i]);
+        if (i < word2.length) buffer.push(word2[i]);
+    }
+
+    return buffer.join('');
+}