java - 在 Java 中反转给定的句子

Question

谁能告诉我如何编写 Java 程序来反转给定的句子？

例如，如果输入是:

"This is an interview question"

输出必须是:

"question interview an is this"

Answer 1

您将字符串按空格分开，然后向后遍历它以组装颠倒的句子。

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 "