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Title Description Sima Guang, a historian of the Song Dynasty, has a famous "theory of virtue and talent" in Zizhi Tongjian: "therefore, it is called a saint to have all talent and virtue, a fool to have both talent and virtue, a gentleman to win virtue, and a fool to win virtue Villain. Anyone who takes a man's skill should ...

9.2 traversal of binary tree A1020 This topic examines the algorithm of building a tree from a middle order sequence and another traversal sequence. The key is to write the tree building function. Since we want to build a tree, the return value can be represented by node *. And because of recursive representation, we should pay attention to t ...

"Correct answer" is the most gratifying reply given by the automatic question judgment system. This question belongs to PAT's "correct answer" distribution - as long as the read string meets the following conditions, the system will output "correct answer", otherwise it will output "wrong answer". The co ...

Topic review 9 (9.10): mathematics related 1 maximum common divisor and minimum common multiple Code of maximum common divisor: int gcd(int a, int b){ if(b == 0) return a; else return gcd(b, a%b); } lcm(a,b) = a / gcd(a,b) * b; //Least common multiple 2 representation of scores Extra attention should be paid to division. If t ...