如何在Java中获取for循环的最后一个值? [英] How to take the last value of a for loop in Java?

问题描述

import java.util.Scanner;
public class Problem1{
  public static void main(String[] args){
    //input
    Scanner kb = new Scanner(System.in);
    String word,letter;
    int counter=0, match,value;
    word=kb.next();
    word=word.toLowerCase();
    letter=kb.next();
    letter=letter.toLowerCase();
    //loop
    for (int i=0;i<word.length();i++)
      if (word.charAt(i)==letter.charAt(0)){
        counter++;
        match=i;
    System.out.print(match);
    }
    if (counter==0)
      System.out.print(-1);
  }
}

我必须在Codio中执行此程序.该程序将读取单词和字母，检查单词中是否包含字母.

I must execute this program in Codio. This program will read a word and a letter, check whether the letter is in the word or not.

如果是，它将在单词中打印字母索引； 如果该字母出现多次，它将打印最后一个位置. 如果单词中没有字母，它将打印-1.

If yes, it will print the letter's index in the word; If the letter occurs more than once, it will print the last location. If the letter is not in the word, it will print -1.

当我在Codio中运行它时，有3个带有字母的位置:2、3和5.我只想取5.

When I ran it in Codio, there were 3 locations that had the letter: 2, 3 and 5. I only want to take 5.

如果有人可以帮助我，我将非常感激.

I would be really grateful if anyone could help me with this.

推荐答案

如果只想输出最后的发现，则需要移动

If you only want to output your last find, you need to move

System.out.print(match);

脱离循环.

但是在打印match之前，请确保计数器为>0.否则，您会得到0-1作为输出.

But make sure that your counter is >0 before you print match. Else you would get 0-1 as an output.

要执行此操作，请添加另一个if (counter > 0) { }或将打印内容移至您现有的if (counter == 0)

To do this either add another if (counter > 0) { } or move the print into the else block of your already existing if (counter == 0)

这篇关于如何在Java中获取for循环的最后一个值?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！