Tiger's leetcode solution

The demons had captured the princess and imprisoned her in  the bottom-right corner  of a  dungeon . The  dungeon  consists of  m x n  rooms...

Given a file and assume that you can only read the file using a given method  read4 , implement a method to read n characters.   Method...

Q: Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as the Hamming weight ). For ...

Q: Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2 ). Find t...

Given a file and assume that you can only read the file using a given method  read4 , implement a method read to read n characters. Your m...

Q: Reverse bits of a given 32 bits unsigned integer. Example 1: Input: 00000010100101000001111010011100 Output: 001110010111100000101...

Given a string s , find the length of the longest substring  t   that contains at most 2 distinct characters. Example 1: Input: "...