一个逻辑问题_张村说谎李村不说谎

来源：互联网发布：python 科学计算编辑：程序博客网时间：2024/05/01 05:39

在论坛里看到一个逻辑题, 回答的人很多, 自己也试了下.

挺有意思的.

问题如下,

有两个村，张村和李村
张村的人星期一三五说谎
李村的人星期二四六说谎

一人问，今天周几？结果两个村的人都回答“前天是我说谎的日子”

问：今天是周几？

代码如下

public class TestLie {/** * @param args */public static void main(String[] args) {String[] days = {"Monday", "Tuesday", "Wednesday", "Thursday","Friday", "Saturday", "Sunday"};boolean[] lieArray_zhang = {true, false, true, false, true, false, true};boolean[] lieArray_li = {false, true, false, true, false, true, true};Person zhang3 = new Person("zhang3", lieArray_zhang);Person li4 = new Person("li4   ", lieArray_li);for (int i = 0; i < 7; i++) {System.out.println("Today is " + days[i]);zhang3.say(i);li4.say(i);}}}class Person {String name;boolean[] lieArray;public Person(String name, boolean[] lieArray) {this.name = name;this.lieArray = lieArray;}public void say(int day) {int f = (day + 5) % 7;if (lieArray[day]) {// today is lie dayif (lieArray[f]) {System.out.println("    " + name+ " : The day before yesterday I not lay.");} else {System.out.println("    " + name+ " : The day before yesterday I lay.");}} else {// today is not lie dayif (lieArray[f]) {System.out.println("    " + name+ " : The day before yesterday I lay.");} else {System.out.println("    " + name+ " : The day before yesterday I not lay.");}}}}

其中周日没有特别说明是都说谎还是都不说谎, 但是对结果没有影响

可以修改lieArray的最后一个为false试试看

以上代码结果如下

Today is Monday    zhang3 : The day before yesterday I lay.    li4    : The day before yesterday I lay.Today is Tuesday    zhang3 : The day before yesterday I lay.    li4    : The day before yesterday I not lay.Today is Wednesday    zhang3 : The day before yesterday I not lay.    li4    : The day before yesterday I not lay.Today is Thursday    zhang3 : The day before yesterday I not lay.    li4    : The day before yesterday I not lay.Today is Friday    zhang3 : The day before yesterday I not lay.    li4    : The day before yesterday I not lay.Today is Saturday    zhang3 : The day before yesterday I not lay.    li4    : The day before yesterday I not lay.Today is Sunday    zhang3 : The day before yesterday I not lay.    li4    : The day before yesterday I lay.

论坛地址

http://bbs.csdn.net/topics/390294090