1. 题目
https://leetcode.cn/problems/implement-rand10-using-rand7/submissions/425373186/
2. 解法
class Solution extends SolBase {
public int rand10() {
int temp = 40;
while (temp >= 40) {
temp = (rand7() - 1) * 7 + rand7()-1;
}
return temp % 10 + 1;
}
}