# 归档 2017年10月8日

## LeetCode Weekly Contest 53解题报告 作者是 在线疯狂 发布于 2017年10月8日 在 LeetCode.

LeetCode Weekly Contest 53是LeetCode举办的第五十七场正式周赛，共4道题目，比赛时长1.5小时。

LeetCode 693. Binary Number with Alternating Bits

LeetCode 695. Max Area of Island

LeetCode 694. Number of Distinct Islands

LeetCode 691. Stickers to Spell Word

## 题目描述：

LeetCode 691. Stickers to Spell Word

We are given N different types of stickers. Each sticker has a lowercase English word on it.

You would like to spell out the given `target` string by cutting individual letters from your ...

## 题目描述：

LeetCode 694. Number of Distinct Islands

Given a non-empty 2D array `grid` of 0's and 1's, an island is a group of `1`'s (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the ...

## 题目描述：

LeetCode 695. Max Area of Island

Given a non-empty 2D array `grid` of 0's and 1's, an island is a group of `1`'s (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the ...

## 题目描述：

LeetCode 693. Binary Number with Alternating Bits

Given a positive integer, check whether it has alternating bits: namely, if two adjacent bits will always have different values.

Example 1:

```Input: 5
Output: True
Explanation:
The binary representation of 5 ...```