在循环过程中,有时候需要在未达到循环结束条件时强制跳出循环,像大多数编程语言一样,Shell也使用 break 和 continue 来跳出循环. break命令 break命令允许跳出所有循环(终止执行后面的所有循环). 下面的例子中,脚本进入死循环直至用户输入数字大于5.要跳出这个循环,返回到shell提示符下,就要使用break命令. #!/bin/bash while : do echo -n "Input a number between 1 to 5: " read aNu…
java当中比较特殊的两个关键字:break,continue.从字面意思来看的话break就是打断的意思,而continue就是继续的意思. 这两个关键词用途范围是很明确的: break:只能用在switch语句或者循环语句当中,除此之外不能单独应用,否则编译的时候会报错: continue:它的应用范围要比break小一层,有且只能用在循环语句当中. 1.break: 作用:break的作用是结束switch语句,还有跳出当前的循环体,如果有标签的话,则挑出指定标签的循环体. int a =…
The 15-puzzle has been around for over 100 years; even if you don't know it by that name, you've seen it. It is constructed with 15 sliding tiles, each with a number from 1 to 15 on it, and all packed into a 4 by 4 frame with one tile missing. Let's…