小刀初试

摘要： Given an array of n integers where n > 1, nums, return an array output such that output[i] is equal to the product of all the elements of nums except ... 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： Given two strings s and t, write a function to determine if t is an anagram of s.For example,s = "anagram", t = "nagaram", return true.s = "rat", t = ... 阅读全文

摘要： Given a binary tree, return all root-to-leaf paths.For example, given the following binary tree: 1 / \2 3 \ 5All root-to-leaf paths are:["1->... 阅读全文

摘要： Given an array of numbers nums, in which exactly two elements appear only once and all the other elements appear exactly twice. Find the two elements ... 阅读全文

摘要： 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... 阅读全文

摘要： Write a program to check whether a given number is an ugly number.Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. For exam... 阅读全文

摘要： Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements.For example, give... 阅读全文

摘要： Given an Iterator class interface with methods: next() and hasNext(), design and implement a PeekingIterator that support the peek() operation -- it e... 阅读全文

摘要： Given an array nums containing n + 1 integers where each integer is between 1 and n (inclusive), prove that at least one duplicate number must exist. ... 阅读全文