题目描述：
LeetCode 406. Queue Reconstruction by Height
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 person and k ...
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[LeetCode]Queue Reconstruction by Height
[LeetCode]Convert a Number to Hexadecimal
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LeetCode.
题目描述：
LeetCode 405. Convert a Number to Hexadecimal
Given an integer, write an algorithm to convert it to hexadecimal. For negative integer, two’s complement method is used.
IMPORTANT:
You must not use any method provided by the library which converts ...
[LeetCode]Sum of Left Leaves
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题目描述：
LeetCode 404. Sum of Left Leaves
Find the sum of all left leaves in a given binary tree.
Example:
3
/ \
9 20
/ \
15 7
There are two left leaves in the binary tree, with values 9 and 15 respectively ...
LeetCode Weekly Contest 5解题报告
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LeetCode.
LeetCode Weekly Contest 5是LeetCode举办的第四场正式周赛，共4道题目，比赛时长2.5小时。
比赛链接：https://leetcode.com/contest/leetcode-weekly-contest-5/
题解列表：
[LeetCode]Frog Jump
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题目描述：
A frog is crossing a river. The river is divided into x units and at each unit there may or may not exist a stone. The frog can jump on a stone, but it must ...