The count-and-say sequence is the sequence of integers with the first five terms as following:

Given a collection of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T.

Given an array of non-negative integers, you are initially positioned at the first index of the array.

Vasya learned definition of median of three numbers. He says, “Median of three numbers is the number located in the middle when numbers are ordered in non-desce...

在使用VBA操作单元格时，合并的单元格可能会导致问题，甚至在工作表中进行一些操作时，合并的单元格也可能会导致错误。因此，如果我们能够识别合并的单元格，就可以确定对它们采取的操作。...

Bessie has gone to the mall's jewelry store and spies a charm bracelet. Of course, she'd like to fill it with the best charms possible from the N (1 ≤ N ≤ 3,402...

Problem Description As you know, Gardon trid hard for his love-letter, and now he’s spending too much time on choosing flowers for Angel. When Gardon entere...

https://leetcode-cn.com/problems/climbing-stairs/

Problem Description There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black tile. From ...

One of the first users of BIT’s new supercomputer was Chip Diller. He extended his exploration of powers of 3 to go from 0 to 333 and he explored taking various...