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Number of 1 Bits

发表于 2015-03-11 分类于 leetcode 阅读次数：

本文讲解 LeetCode Number of 1 Bits 的位运算解法，通过掩码分组统计 32 位无符号整数中的 1，并给出 C++ 实现与计算过程。

发表于 2015-01-16 分类于 C++ 阅读次数：

Perl Compatible Regular Expressions (PCRE) is a regular expression C library inspired by the regular expression capabilities in the Perl pr…

发表于 2015-01-14 分类于 leetcode 阅读次数：

Given an array of integers, find two numbers such that they add up to a specific target number.

发表于 2015-01-04 分类于 leetcode 阅读次数：

Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the g…

发表于 2014-12-30 分类于 leetcode 阅读次数：

using the Breadth-first traversal and use a map to save the neighbors not to be duplicated.