add problem 1768

Author: anubhavsrivastava

Easy/1768 Merge Strings Alternately/Readme.md

@@ -0,0 +1,41 @@
+## Problem
+
+You are given two strings word1 and word2. Merge the strings by adding letters in alternating order, starting with word1. If a string is longer than the other, append the additional letters onto the end of the merged string.
+
+Return the merged string.
+
+Example 1:
+
+Input: word1 = "abc", word2 = "pqr"
+Output: "apbqcr"
+Explanation: The merged string will be merged as so:
+word1: a b c
+word2: p q r
+merged: a p b q c r
+
+Example 2:
+
+Input: word1 = "ab", word2 = "pqrs"
+Output: "apbqrs"
+Explanation: Notice that as word2 is longer, "rs" is appended to the end.
+word1: a b
+word2: p q r s
+merged: a p b q r s
+
+Example 3:
+
+Input: word1 = "abcd", word2 = "pq"
+Output: "apbqcd"
+Explanation: Notice that as word1 is longer, "cd" is appended to the end.
+word1: a b c d
+word2: p q
+merged: a p b q c d
+
+Constraints:
+
+1 <= word1.length, word2.length <= 100
+word1 and word2 consist of lowercase English letters.
+
+## Pre analysis
+
+This problem is mostly aligned with merge phase of merge sort. You push alternatively each element into result until you run out of elements from both

Easy/1768 Merge Strings Alternately/mergeStringsAlternately.js

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+/**
+ * @param {string} word1
+ * @param {string} word2
+ * @return {string}
+ */
+var mergeAlternately = function (word1, word2) {
+  let result = [];
+  const max = Math.max(word1.length, word2.length);
+
+  for (let i = 0; i < max; i++) {
+    if (i < word1.length) result.push(word1[i]);
+    if (i < word2.length) result.push(word2[i]);
+  }
+  return result.join("");
+};

Easy/README.md

@@ -1,4 +1,4 @@
-## Problems Solved - 227
+## Problems Solved - 228
 
 | # | Problem Name | Difficulty | Solution |
 | ---- | ------------ | ---------- | ----------- |  
@@ -140,6 +140,7 @@
 | <a href="/Easy/1688 Count of Matches in Tournament/">1688</a> |  <a href="/Easy/1688 Count of Matches in Tournament">Count of Matches in Tournament</a>| Easy | <a href="/Easy/1688 Count of Matches in Tournament/countOfMatchesInTournament.js">Solution</a> | 
 | <a href="/Easy/1732 Find the Highest Altitude/">1732</a> |  <a href="/Easy/1732 Find the Highest Altitude">Find the Highest Altitude</a>| Easy | <a href="/Easy/1732 Find the Highest Altitude/findTheHighestAltitude.js">Solution</a> | 
 | <a href="/Easy/1748 Sum of Unique Elements/">1748</a> |  <a href="/Easy/1748 Sum of Unique Elements">Sum of Unique Elements</a>| Easy | <a href="/Easy/1748 Sum of Unique Elements/sumOfUniqueElements.js">Solution</a> | 
+| <a href="/Easy/1768 Merge Strings Alternately/">1768</a> |  <a href="/Easy/1768 Merge Strings Alternately">Merge Strings Alternately</a>| Easy | <a href="/Easy/1768 Merge Strings Alternately/mergeStringsAlternately.js">Solution</a> | 
 | <a href="/Easy/1773 Count Items Matching a Rule/">1773</a> |  <a href="/Easy/1773 Count Items Matching a Rule">Count Items Matching a Rule</a>| Easy | <a href="/Easy/1773 Count Items Matching a Rule/countItemsMatchingARule.js">Solution</a> | 
 | <a href="/Easy/1812 Determine Color of a Chessboard Square/">1812</a> |  <a href="/Easy/1812 Determine Color of a Chessboard Square">Determine Color of a Chessboard Square</a>| Easy | <a href="/Easy/1812 Determine Color of a Chessboard Square/determineColorOfAChessboardSquare.js">Solution</a> | 
 | <a href="/Easy/1816 Truncate Sentence/">1816</a> |  <a href="/Easy/1816 Truncate Sentence">Truncate Sentence</a>| Easy | <a href="/Easy/1816 Truncate Sentence/truncateSentence.js">Solution</a> | 

Problems.md

@@ -1,4 +1,4 @@
-## Problems Solved - 269
+## Problems Solved - 270
 
 | # | Problem Name | Difficulty | Solution |
 | ---- | ------------ | ---------- | ----------- |  
@@ -168,6 +168,7 @@
 | <a href="/Easy/1688 Count of Matches in Tournament/">1688</a> |  <a href="/Easy/1688 Count of Matches in Tournament">Count of Matches in Tournament</a>| Easy | <a href="/Easy/1688 Count of Matches in Tournament/countOfMatchesInTournament.js">Solution</a> | 
 | <a href="/Easy/1732 Find the Highest Altitude/">1732</a> |  <a href="/Easy/1732 Find the Highest Altitude">Find the Highest Altitude</a>| Easy | <a href="/Easy/1732 Find the Highest Altitude/findTheHighestAltitude.js">Solution</a> | 
 | <a href="/Easy/1748 Sum of Unique Elements/">1748</a> |  <a href="/Easy/1748 Sum of Unique Elements">Sum of Unique Elements</a>| Easy | <a href="/Easy/1748 Sum of Unique Elements/sumOfUniqueElements.js">Solution</a> | 
+| <a href="/Easy/1768 Merge Strings Alternately/">1768</a> |  <a href="/Easy/1768 Merge Strings Alternately">Merge Strings Alternately</a>| Easy | <a href="/Easy/1768 Merge Strings Alternately/mergeStringsAlternately.js">Solution</a> | 
 | <a href="/Easy/1773 Count Items Matching a Rule/">1773</a> |  <a href="/Easy/1773 Count Items Matching a Rule">Count Items Matching a Rule</a>| Easy | <a href="/Easy/1773 Count Items Matching a Rule/countItemsMatchingARule.js">Solution</a> | 
 | <a href="/Easy/1812 Determine Color of a Chessboard Square/">1812</a> |  <a href="/Easy/1812 Determine Color of a Chessboard Square">Determine Color of a Chessboard Square</a>| Easy | <a href="/Easy/1812 Determine Color of a Chessboard Square/determineColorOfAChessboardSquare.js">Solution</a> | 
 | <a href="/Easy/1816 Truncate Sentence/">1816</a> |  <a href="/Easy/1816 Truncate Sentence">Truncate Sentence</a>| Easy | <a href="/Easy/1816 Truncate Sentence/truncateSentence.js">Solution</a> |