Reverse Words in a String

keelii 发布于2019-08-14 14:05 / 923人阅读

摘要：思路把以空格为间隔分隔开存入然后倒着加入并且每个加入以后后面加空格，最后记的清除最后一个空格。

Reverse Words in a String

Given an input string, reverse the string word by word.
For example, Given s = "the sky is blue", return "blue is sky the".

思路：把string以空格为间隔分隔开存入array, 然后倒着加入stringBuilder并且每个加入以后后面加空格，最后记的清除最后一个空格。

public class Solution {
   public String reverseWords(String s) {
        if (s == null || s.length() == 0) {
            return "";
        }

        String[] array = s.split(" ");
        StringBuilder sb = new StringBuilder();

        for (int i = array.length - 1; i >= 0; i--) {
            if (!array[i].equals("")) {
                sb.append(array[i]).append(" ");
            }
        }

        //remove the last " "
        return sb.length() == 0 ? "" : sb.substring(0, sb.length() - 1);
    }
}

服务器托管海外云主机 Aspose.Words Words Reverse reverse-proxy

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