小刀初试

摘要： Given an unsorted integer array, find the first missing positive integer.For example,Given [1,2,0] return 3,and [3,4,-1,1] return 2.Your algorithm sho... 阅读全文

摘要： Given two words word1 and word2, find the minimum number of steps required to convert word1 to word2. (each operation is counted as 1 step.)You have t... 阅读全文

摘要： Divide two integers without using multiplication, division and mod operator.两个数的除法，但是不允许用乘、除、取余符号。[解题思路]如果可以用乘的话，二分搜索倒是不错的解法。否则，只能寄希望于位符操作了。 基本思想就是把除数... 阅读全文