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- // The rand7() API is already defined for you.
- // int rand7();
- // @return a random integer in the range 1 to 7
- class Solution {
- public:
- int rand10() {
- int num = 40;
- while (num >= 40)
- num = 7 * (rand7() - 1) + (rand7() - 1);
- return num % 10 + 1;
- }
- };
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