摘要：
Contains Duplicate IIIGiven an array of integers, find out whether there are two distinct indicesiandjin the array such that the difference betweennum... 阅读全文
摘要：
Ugly Number IIWrite a program to find then-th ugly number.Ugly numbers are positive numbers whose prime factors only include2, 3, 5. For example,1, 2,... 阅读全文
摘要：
Ugly NumberWrite a program to check whether a given number is an ugly number.Ugly numbers are positive numbers whose prime factors only include2, 3, 5... 阅读全文