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Kotlin-based LeetCode algorithm problem solutions, regularly updated
1768\. Merge Strings Alternately
Easy
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.