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Using rejection sampling to generate random number
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| # The rand7() API is already defined for you. | |
| # def rand7(): | |
| # @return a random integer in the range 1 to 7 | |
| class Solution: | |
| def generate(self): | |
| row, col = rand7(), rand7() | |
| return ((row-1) * 7 ) + col | |
| def rand10(self): | |
| res = self.generate() | |
| while res > 40: res = self.generate() | |
| return ((res - 1) % 10 + 1) | |
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