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leetcode-problemset/leetcode-cn/problem (Chinese)/交替合并字符串 [merge-strings-alternately].html
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<p>给你两个字符串 <code>word1</code><code>word2</code> 。请你从 <code>word1</code> 开始,通过交替添加字母来合并字符串。如果一个字符串比另一个字符串长,就将多出来的字母追加到合并后字符串的末尾。</p>
<p>返回 <strong>合并后的字符串</strong></p>
<p> </p>
<p><strong>示例 1</strong></p>
<pre>
<strong>输入:</strong>word1 = "abc", word2 = "pqr"
<strong>输出:</strong>"apbqcr"
<strong>解释:</strong>字符串合并情况如下所示:
word1 a b c
word2 p q r
合并后: a p b q c r
</pre>
<p><strong>示例 2</strong></p>
<pre>
<strong>输入:</strong>word1 = "ab", word2 = "pqrs"
<strong>输出:</strong>"apbqrs"
<strong>解释:</strong>注意word2 比 word1 长,"rs" 需要追加到合并后字符串的末尾。
word1 a b
word2 p q r s
合并后: a p b q r s
</pre>
<p><strong>示例 3</strong></p>
<pre>
<strong>输入:</strong>word1 = "abcd", word2 = "pq"
<strong>输出:</strong>"apbqcd"
<strong>解释:</strong>注意word1 比 word2 长,"cd" 需要追加到合并后字符串的末尾。
word1 a b c d
word2 p q
合并后: a p b q c d
</pre>
<p> </p>
<p><strong>提示:</strong></p>
<ul>
<li><code>1 <= word1.length, word2.length <= 100</code></li>
<li><code>word1</code><code>word2</code> 由小写英文字母组成</li>
</ul>