作者归档：在线疯狂

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。

比赛链接：https://leetcode.com/contest/leetcode-weekly-contest-53/

题解列表：

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 ...