tjuloading

摘要： Given two wordsword1andword2, find the minimum number of steps required to convertword1toword2. (each operation is counted as 1 step.)You have the fol... 阅读全文

摘要： Given a linked list and a valuex, partition it such that all nodes less thanxcome before nodes greater than or equal tox.You should preserve the origi... 阅读全文

摘要： Given two stringssandt, write a function to determine iftis an anagram ofs.For example,s= "anagram",t= "nagaram", return true.s= "rat",t= "car", retur... 阅读全文

摘要： Implementint sqrt(int x).Compute and return the square root ofx.思路： 突然发现，二分真TM的是万能的。还有牛顿迭代法，数学的东西，头疼不想看了。还有传说中的“魔数”法，比math库效率都高，试了下RE - -。C++: 1 clas... 阅读全文

摘要： Implement pow(x,n).思路： 实现pow(x,n)函数。首先，可以n次连乘x，但是这样太慢了。加速：2^10 -> 4^5 -> 16^2 * 4 ->256^1 * 4C++: 1 class Solution { 2 public: 3 double myPow(dou... 阅读全文

摘要： Implement a basic calculator to evaluate a simple expression string.The expression string contains onlynon-negativeintegers,+,-,*,/operators and empty... 阅读全文

摘要： Given a string of numbers and operators, return all possible results from computing all the different possible ways to group numbers and operators. Th... 阅读全文

摘要： Divide two integers without using multiplication, division and mod operator.If it is overflow, return MAX_INT.题意： 实现除法，但不允许用乘、除、以及取模运算。思路： 一下一下减必然显得... 阅读全文

摘要： Write an efficient algorithm that searches for a value in anmxnmatrix. This matrix has the following properties:Integers in each row are sorted in asc... 阅读全文

摘要： Given a sorted array of integers, find the starting and ending position of a given target value.Your algorithm's runtime complexity must be in the ord... 阅读全文