一码当先 -

带翅膀的猫发布了一篇文章

LeetCode刷题（Easy Rank）：937. Reorder Log Files

2月前 • LeetCode • String • 49 • 0

Question:

We will call these two varieties of logs letter-logs and digit-logs. It is guaranteed that each log has at least one word after its identifier.

1 阅读全文
带翅膀的猫发布了一篇文章

LeetCode刷题（Easy Rank）：929. Unique Email Addresses

2月前 • LeetCode • String • 24 • 0

Question:

Every email consists of a local name and a domain name, separated by the @ sign.For example, in alice@leetcode.com, alice is the local name, and leetcode.com is the domain name.

1 阅读全文
带翅膀的猫发布了一篇文章

LeetCode刷题（Easy Rank）：893. Groups of Special-Equivalent Strings

2月前 • LeetCode • String • 13 • 0

Question:

You are given an array A of strings.Two strings and T are special-equivalent if after any number of moves, S == T.A move consists of choosing two indices i and j with i % 2 == j % 2, and swapping S[i] with S[j].

1 阅读全文
带翅膀的猫发布了一篇文章

LeetCode刷题（Easy Rank）：859. Buddy Strings

2月前 • LeetCode • String • 20 • 0

Question:

Given two strings A and of lowercase letters, return true if and only if we can swap two letters in A so that the result equals .

1 阅读全文
带翅膀的猫发布了一篇文章

LeetCode刷题（Easy Rank）：824. Goat Latin

2月前 • LeetCode • String • 19 • 0

Question:

A sentence is given, composed of words separated by spaces. Each word consists of lowercase and uppercase letters only.We would like to convert the sentence to “Goat Latin” (a made-up language similar to Pig Latin.)

1 阅读全文
带翅膀的猫发布了一篇文章

LeetCode刷题（Easy Rank）：819. Most Common Word

2月前 • LeetCode • String • 22 • 0

Question:

Given a paragraph and a list of banned words, return the most frequent word that is not in the list of banned words. It is guaranteed there is at least one word that isn’t banned, and that the answer is unique.

1 阅读全文
带翅膀的猫发布了一篇文章

LeetCode刷题（Easy Rank）：804. Unique Morse Code Words

2月前 • LeetCode • String • 19 • 0

Question:

International Morse Code defines a standard encoding where each letter is mapped to a series of dots and dashes, as follows: "a" maps to ".-", "b" maps to "-...", "c" maps to "-.-.", and so on.

1 阅读全文
带翅膀的猫发布了一篇文章

LeetCode刷题（Easy Rank）：788. Rotated Digits

2月前 • LeetCode • String • 18 • 0

Question:

X is a good number if after rotating each digit individually by 180 degrees, we get a valid number that is different from X. Each digit must be rotated – we cannot choose to leave it alone.

1 阅读全文
带翅膀的猫发布了一篇文章

LeetCode刷题（Easy Rank）：709. To Lower Case

2月前 • LeetCode • String • 18 • 0

Question:

Implement function ToLowerCase() that has a string parameter str, and returns the same string in lowercase.

1 阅读全文
带翅膀的猫发布了一篇文章

LeetCode刷题（Easy Rank）：696. Count Binary Substrings

2月前 • LeetCode • String • 14 • 0

Question:

Give a string , count the number of non-empty (contiguous) substrings that have the same number of 0’s and 1’s, and all the 0’s and all the 1’s in these substrings are grouped consecutively.

1 阅读全文