string driven模式

Z 字形变换

Convert a string into a zigzag pattern across multiple rows and read it line by line efficiently for string manipulation…

字符串转换整数 (atoi)

Convert a string to a 32-bit signed integer by carefully parsing characters, handling signs, and ignoring invalid traili…

外观数列

Count and Say requires building the nth sequence term by iteratively applying a run-length encoding on strings of digits…

最后一个单词的长度

Determine the length of the last word in a string using a focused string-driven approach to handle spaces and trailing c…

有效数字

Determine if a given string represents a valid number using precise string parsing and character validation rules.

字符串中的单词数

Count the segments of non-space characters in a string by applying a string-driven approach to solve the problem.

验证IP地址

Determine whether a given string is a valid IPv4 or IPv6 address using a precise string-driven validation strategy.

密钥格式化

Reformat a license key string by splitting into groups of size k, converting to uppercase, and handling dashes appropria…

检测大写字母

Detect Capital asks you to determine if a word follows a correct capital usage pattern based on specific rules.

最长特殊序列 Ⅰ

Determine the length of the longest uncommon subsequence between two strings using a direct string comparison strategy.

学生出勤记录 I

Determine if a student's attendance record qualifies for an award based on specific criteria for absences and lateness.

转换成小写字母

The "To Lower Case" problem asks you to convert all uppercase letters in a string to lowercase.

山羊拉丁文

Convert a sentence to Goat Latin by transforming each word based on vowel rules and incremental suffixes efficiently.

较大分组的位置

Identify and return intervals of consecutive, large character groups in a string of lowercase letters.

隐藏个人信息

This problem requires masking sensitive parts of emails and phone numbers using a precise string-driven strategy efficie…

Bigram 分词

Extract the third word in every adjacent triple of words matching a given bigram pattern from a text.

IP 地址无效化

Transform an IPv4 address by replacing each period with '[.]', focusing on a string-driven, direct manipulation approach…

解码字母到整数映射

Decrypt a string using alphabet-to-integer mapping, considering the presence of '#' as a special delimiter.

生成每种字符都是奇数个的字符串

Generate a string of n characters where each character appears an odd number of times, using a string-driven approach.

重新格式化字符串

Reformat The String involves rearranging alphanumeric characters in a string so that no adjacent characters have the sam…

连续字符

Find the power of a string by determining the length of its longest substring with a unique character.

转变日期格式

Reformat Date requires transforming a date string from human-readable form to YYYY-MM-DD using a string-driven strategy …

千位分隔数

Convert a given integer into a string with dots as thousand separators using a precise string-driven strategy.

替换所有的问号

Solve LeetCode 1576 by scanning left to right and replacing each ? with a letter different from its neighbors.