用Java反转给定的句子

问题描述

有谁能告诉我如何编写Java程序来反转给定的句子？

Can anyone tell me how to write a Java program to reverse a given sentence?

例如，如果输入是：

输出必须是：

推荐答案

你用空格分割字符串，然后向后迭代它以组合反向句子。

You split the string by the space then iterate over it backwards to assemble the reversed sentence.

String[] words =  "This is interview question".split(" ");

String rev = "";
for(int i = words.length - 1; i >= 0 ; i--)
{
   rev += words[i] + " ";
}

// rev = "question interview is This "

// can also use StringBuilder:
StringBuilder revb = new StringBuilder();
for(int i = words.length - 1; i >= 0 ; i--)
{
   revb.append(words[i]);
   revb.append(" ");
}
// revb.toString() = "question interview is This "

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