immjc

摘要： Suppose you have a random list of people standing in a queue. Each person is described by a pair of integers (h, k), where h is the height of the pers 阅读全文

摘要： Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in their binary representation and r 阅读全文

摘要： Given an 2D board, count how many battleships are in it. The battleships are represented with 'X's, empty slots are represented with '.'s. You may ass 阅读全文

摘要： Given two strings representing two complex numbers. You need to return a string representing their multiplication. Note i2 = -1 according to the defin 阅读全文

摘要： A string S of lowercase letters is given. We want to partition this string into as many parts as possible so that each letter appears in at most one p 阅读全文

摘要： Given two integers L and R, find the count of numbers in the range [L, R] (inclusive) having a prime number of set bits in their binary representation 阅读全文

摘要： Given an integer array with no duplicates. A maximum tree building on this array is defined as follow: Construct the maximum tree by the given array a 阅读全文

摘要： Given two lists Aand B, and B is an anagram of A. B is an anagram of A means B is made by randomizing the order of the elements in A. We want to find 阅读全文

摘要： this指针 一个对象的this指针并不是对象本身的一部分，不会影响sizeof(对象)的结果。 this指针的作用域是在类内部，当在类的非静态成员函数中访问类的非静态成员函数的时候，编译器会自动将对象本身的地址作为一个隐含参数传递给函数。 举个栗子 插一句：定义在类内部的函数是隐式的inline函 阅读全文

摘要： Find the largest palindrome made from the product of two n-digit numbers. Since the result could be very large, you should return the largest palindro 阅读全文