35 lines
1.1 KiB
Java
35 lines
1.1 KiB
Java
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package com.zerroi.leetcode.Three14;
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public class ReverseWords {
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public static void main(String[] args) {
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SolutionSecond solutionSecond = new SolutionSecond();
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String res = solutionSecond.reverseWords("a good example");
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System.out.println("res = " + res);
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}
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}
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class SolutionSecond {
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public String reverseWords(String s) {
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StringBuilder builder = new StringBuilder();
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int startIndex = 0;
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int endIndex = s.length() - 1;
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for (; startIndex < s.length(); startIndex++) {
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if (s.charAt(startIndex) != ' ') break;
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}
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for (; endIndex >= 0; endIndex--) {
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if (s.charAt(endIndex) != ' ') break;
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}
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int cur = endIndex;
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for (; startIndex <= endIndex; endIndex--) {
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if (s.charAt(endIndex) == ' ') {
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if (s.charAt(endIndex + 1) != ' ') {
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builder.append(s, endIndex + 1, cur + 1).append(" ");
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}
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cur = endIndex - 1;
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}
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}
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builder.append(s, startIndex, cur + 1);
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return builder.toString();
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}
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}
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