i++放在if后面和前面的运行结果为什么不一样？

Question

public static void main(String[] args) {

int sum=0;

int i=0;

while(i<=10) {

i++;

if(i%3!=0)

sum+=i;

}

System.out.println(sum);

————————华丽分割线——————————

public static void main(String[] args) {

int sum=0;

int i=0;

while(i<=10) {

if(i%3!=0)

sum=sum+i;

i++;

}

System.out.println(sum);

Answer 1

第一遍循环第一个sum是1,第二个是0 我以前老师也喜欢用华丽丽的分割线

Answer 2

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

Answer 3

第一个是1+2+4+5+7+8+10+11； 第二个是0+1+2+4+5+7+8+10；