java java.java中的三元if else运算符

Posted 2021-05-08

//#solution 1       
sum[level % 2 == 0 ? 0 : 1] += root.val;

//#solution 2
int a = (level % 2 == 0) ? (sum[0] += root.val) : (sum[1] += root.val);

//#solution 3
if(level % 2 == 0) {
    sum[0] += root.val;
} else {
    sum[1] += root.val;
}