# 归档 2017年3月5日

## LeetCode Weekly Contest 22解题报告 作者是 在线疯狂 发布于 2017年3月5日 在 LeetCode.

LeetCode Weekly Contest 22是LeetCode举办的第二十七场正式周赛，共4道题目，比赛时长1.5小时。

LeetCode 532. K-diff Pairs in an Array

LeetCode 531. Lonely Pixel I

LeetCode 533. Lonely Pixel II

LeetCode 514. Freedom Trail

## 题目描述：

LeetCode 514. Freedom Trail

In the video game Fallout 4, the quest "Road to Freedom" requires players to reach a metal dial called the "Freedom Trail Ring", and use the dial to spell a specific keyword in order to ...

## 题目描述：

LeetCode 533. Lonely Pixel II

Given a picture consisting of black and white pixels, and a positive integer N, find the number of black pixels located at some specific row R and column C that align with all the ...

## 题目描述：

LeetCode 531. Lonely Pixel I

Given a picture consisting of black and white pixels, find the number of black lonely pixels.

The picture is represented by a 2D char array consisting of 'B' and 'W', which means black and ...

## 题目描述：

LeetCode 532. K-diff Pairs in an Array

Given an array of integers and an integer k, you need to find the number of unique k-diff pairs in the array. Here a k-diff pair is defined as an integer pair ...