20 lines
501 B
Java
20 lines
501 B
Java
class Solution {
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public String mergeAlternately(String word1, String word2) {
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StringBuilder sb = new StringBuilder(word1.length() + word2.length());
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int i, j;
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for (i = 0, j = 0; i < word1.length() && j < word2.length(); ++i, ++j) {
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sb.append(word1.charAt(i));
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sb.append(word2.charAt(j));
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}
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if (i < word1.length()) {
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sb.append(word1.substring(i));
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}
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if (j < word2.length()) {
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sb.append(word2.substring(j));
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}
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return sb.toString();
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}
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}
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