• java 每日习题(十二) 题目:通过输入的第一个字母识别指定的几个单词


    题目:通过输入的第一个字母识别周一至周日

    1.  switch大小写使用同一case处理。

    2.  通过标记使break和continue跳到指定位置,标记和while之间不能有其它代码。

    package everyDay;
    
    import java.util.Scanner;
    
    import org.junit.Test;
    
    public class RecWeeknum {
    
        @Test
        public void decideWeekNum() {
            System.out.println("please input weeknum start char,only one char");
            Scanner scan = new Scanner(System.in);
            String str = "";
            wil: while (true) {
                str = scan.next();
                if (str.length() == 1) {
                    switch (str) {
                    case "m":
                    case "M":
                        System.out.println("monday");
                        break;
    
                    case "t":
                    case "T":
                        System.out.println("please input second char");
                        second: while (true) {
                            str = scan.next();
                            if (str.length() == 1) {
                                switch (str) {
                                case "u":
                                case "U":
                                    System.out.println("tuesday");
                                    break;
                                case "h":
                                case "H":
                                    System.out.println("thursday");
                                    continue second;
    
                                default:
                                    System.out.println("please input again");
                                    str = scan.next();
                                    break;
                                }
                            } else {
                                System.out.println("only input one char");
                                continue;
                            }
    
                            break;
    
                        }
                        break;
    
                    case "w":
                    case "W":
                        System.out.println("wednesday");
                        break;
    
                    case "f":
                    case "F":
                        System.out.println("friday");
                        break;
    
                    case "s":
                    case "S":
                        System.out.println("please input second char");
                        second: while (true) {
                            str = scan.next();
                            if (str.length() == 1) {
                                switch (str) {
                                case "u":
                                case "U":
                                    System.out.println("sunday");
                                    break;
                                case "a":
                                case "A":
                                    System.out.println("saturday");
                                    break;
    
                                default:
                                    System.out.println("please input again");
                                    continue;
                                }
                            } else {
                                System.out.println("only input one char");
                                continue;
                            }
    
                            break;
    
                        }
                        break;
    
                    default:
                        System.out.println("please input again");
                        continue wil;
                    }
                    break;
    
                } else {
                    System.out.println("only input one char");
                    
                }
            }
    
        }
    }
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  • 原文地址:https://www.cnblogs.com/mtlogs/p/5006494.html
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