Reverse Words in a String

keelii 發布于2019-08-14 14:05 / 1038人閱讀

摘要：思路把以空格為間隔分隔開存入然后倒著加入并且每個加入以后后面加空格，最后記的清除最后一個空格。

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以空格為間隔分隔開存入array, 然后倒著加入stringBuilder并且每個加入以后后面加空格，最后記的清除最后一個空格。

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);
    }
}

云服務器 GPU云服務器 Aspose.Words Words Reverse reverse-proxy

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