#数学逻辑 · 小土刀 5.0

2016-01-16

100 Lockers

There are 100 closed lockers in a hallway. A man begins by opening all 100 lockers.

2016-01-16

Given a non-negative integer num, repeatedly add all its digits until the result has only one digit.

2016-01-16

There are three ants on different vertices of a triangel.

2016-01-16

In the new post-apocalyptic world, the world queen is desperately concerned about the birth rate.

2016-01-16

You have a basketball hoop and someone says that you can play one of two games

2016-01-15

Cosine similarity is a measure of similarity between two vectors of an inner product space that measures the c

2016-01-15

Count the number of prime numbers less than a non-negative number, n.

2016-01-15

给定一个 01 串，恰好包含 2n 个 0 和 2n 个 1，你可以把它切成若干段，再把它们任意拼接，要求拼接除两部分，每部分恰好包含 n 个 0，n 个 1，如何使得切的段数最少？

2016-01-15

将两个整数相除，要求不使用乘法、除法和 mod 运算符。

2016-01-15

There is a building of 100 floors. If an egg drops from the Nth floor or above, it will break.