头哥实践教学平台答案选择结构
时间: 2023-11-27 09:47:44 浏览: 335
根据提供的引用[1],该实践项目是Java数据结构之图,因此我假设您想了解如何在Java中使用选择结构。在Java中,选择结构包括if语句,switch语句和三元运算符。下面是这些选择结构的示例:
1. if语句
```java
int x = 10;
if (x > 5) {
System.out.println("x is greater than 5");
} else {
System.out.println("x is less than or equal to 5");
}
```
2. switch语句
```java
int day = 4;
switch (day) {
case 1:
System.out.println("Monday");
break;
case 2:
System.out.println("Tuesday");
break;
case 3:
System.out.println("Wednesday");
break;
case 4:
System.out.println("Thursday");
break;
case 5:
System.out.println("Friday");
break;
case 6:
System.out.println("Saturday");
break;
case 7:
System.out.println("Sunday");
break;
default:
System.out.println("Invalid day");
break;
}
```
3. 三元运算符
```java
int x = 10;
String result = (x > 5) ? "x is greater than 5" : "x is less than or equal to 5";
System.out.println(result);
```