算法:LeetCode470_用Rand7()实现Rand10()_java实现

/**
 * LeetCode470_用Rand7()实现Rand10()
 */
public class LeetCode470 extends SolBase {
	public int rand10() {
		int temp = 40;
		while (temp >= 40) {
			temp = (rand7() - 1) * 7 + rand7() - 1;
		}
		return temp % 10 + 1;
	}
}

解题思路分析过程：