Reverse Words in a String

keelii 發(fā)布于2019-08-14 14:05 / 1121人閱讀

摘要：思路把以空格為間隔分隔開(kāi)存入然后倒著加入并且每個(gè)加入以后后面加空格，最后記的清除最后一個(gè)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(kāi)存入array, 然后倒著加入stringBuilder并且每個(gè)加入以后后面加空格，最后記的清除最后一個(gè)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(wù)器 GPU云服務(wù)器 Aspose.Words Words Reverse reverse-proxy

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