LeetCode 14. Longest Common Prefix
Description https://leetcode.com/problems/longest-common-prefix/description/ Write a function to find the longest common prefix string amongst an array of strings. If there is…
Category: String
LeetCode 12. Integer to Roman
Description https://leetcode.com/problems/integer-to-roman/ Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from…
LeetCode 8. String to Integer (atoi)
Description https://leetcode.com/problems/string-to-integer-atoi/ Implement atoi which converts a string to an integer. The function first discards as many whitespace characters as necessary until the…
LeetCode 28. Implement strStr()
Description https://leetcode.com/problems/implement-strstr/ Implement strStr(). Return the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. Clarification: What…
LeetCode 3. Longest Substring Without Repeating Characters
Description https://leetcode.com/problems/longest-substring-without-repeating-characters/ Given a string, find the length of the longest substring without repeating characters. Example 1: Input: “abcabcbb” Output: 3 Explanation:…