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Kotlin While 循环


循环

循环可以执行一段代码,只要满足指定的条件。

循环非常方便,因为它们可以节省时间、减少错误,并使代码更易于阅读。


Kotlin While 循环

The while 循环会不断循环执行代码块,只要指定的条件为 true

语法

while (condition) {
  // code block to be executed
}

在下面的示例中,循环中的代码将一遍又一遍地运行,只要计数器变量 (i) 小于 5。

示例

var i = 0
while (i < 5) {
  println(i)
  i++
} 
自己试一试 »

注意: 不要忘记增加条件中使用的变量,否则循环将永远不会结束。



Do..While 循环

The do..while 循环是 while 循环的一个变体。此循环将先执行一次代码块,然后再检查条件是否为真,然后只要条件为真,它就会重复循环。

语法

do {
  // code block to be executed
}
while (condition);

下面的示例使用 do/while 循环。即使条件为假,循环也将始终至少执行一次,因为代码块是在测试条件之前执行的。

示例

var i = 0
do {
  println(i)
  i++
  }
while (i < 5) 
自己试一试 »

不要忘记增加条件中使用的变量,否则循环将永远不会结束!



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