题目描述:
Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 2 ^ 31 - 1.
For example,
123 -> "One Hundred Twenty Three" 12345 -> "Twelve Thousand Three Hundred Forty Five" 1234567 -> "One ...
Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 2 ^ 31 - 1.
For example,
123 -> "One Hundred Twenty Three" 12345 -> "Twelve Thousand Three Hundred Forty Five" 1234567 -> "One ...
Implement int sqrt(int x)
.
Compute and return the square root of x.
实现函数 int sqrt(int x)
.
计算并返回x的平方根(整型)
题目并不要求计算sqrt(x)的精确值,只需返回小于等于sqrt(x)的最大整数即可。
class Solution(object):
def mySqrt(self, x):
"""
:type ...
Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array.
For example,
Given nums = [0, 1, 3] return 2.
Note:
Your algorithm should run in linear runtime ...
You are climbing a stair case. It takes n steps to reach to the top.
Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top?
你正在爬楼梯。爬到顶部需要n步 ...
Write a program to find the n-th ugly number.
Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. For example, 1, 2, 3, 4, 5, 6, 8, 9, 10, 12 is the sequence of the ...