[英]i do not get the logic behind this code. Can someone please explain to me what it really does and how?
class Echo{
int count = 0;
void hello(){
System.out.println("hellooo...");
}
}
public class EchoTestDrive {
public static void main(String[] args) {
Echo e1 = new Echo();
Echo e2 = new Echo();
int x=0;
while(x<4){
e1.hello();
e1.count = e1.count+1;
if(x==3){
e2.count = e2.count +1;
}
if (x>0){
e2.count = e2.count + e1.count;
}
x=x+1;
}
System.out.println(e2.count);
}
}
我已经重新格式化了代码:
class Echo {
int count = 0;
void hello() {
System.out.println("hellooo...");
}
}
public class Main {
public static void main(String[] args) {
Echo e1 = new Echo();
Echo e2 = new Echo();
int x = 0;
while (x < 4) {
e1.hello();
e1.count++;
if (x == 3) e2.count++;
if (x > 0) e2.count = e2.count + e1.count;
x++;
}
System.out.println(e2.count);
}
}
如果我们看一下 while 循环:
1)在第一个循环之后(x = 0):
e1.count = 1
e2.count = 0
2) x=1
e1.count = 2
e2.count = 0 + 2 = 2
3) x=2
e1.count = 3
e2.count = 2 + 3 = 5
4) x=3
e1.count = 4
e2.count = 6(如 x=3)
e2.count = 6 + 4 = 10
因此,您的 output 是:
hellooo...
hellooo...
hellooo...
hellooo...
10
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