123 docs tagged with "string"

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Add Binary

LeetCode 67 | Difficulty: Easy

Add Strings

LeetCode 415 | Difficulty: Easy

Basic Calculator

LeetCode 224 | Difficulty: Hard

Basic Calculator II

LeetCode 227 | Difficulty: Medium

Basic Calculator III

LeetCode 785 | Difficulty: Hard

Binary Tree Paths

LeetCode 257 | Difficulty: Easy

Buddy Strings

LeetCode 889 | Difficulty: Easy

Check if All A's Appears Before All B's

LeetCode 2243 | Difficulty: Easy

Check if All Characters Have Equal Number of Occurrences

LeetCode 2053 | Difficulty: Easy

Check if One String Swap Can Make Strings Equal

LeetCode 1915 | Difficulty: Easy

Compare Version Numbers

LeetCode 165 | Difficulty: Medium

Count and Say

LeetCode 38 | Difficulty: Medium

Count Binary Substrings

LeetCode 696 | Difficulty: Easy

Count Number of Homogenous Substrings

LeetCode 1885 | Difficulty: Medium

Crawler Log Folder

LeetCode 1720 | Difficulty: Easy

Decode String

LeetCode 394 | Difficulty: Medium

Decode Ways

LeetCode 91 | Difficulty: Medium

Determine if Two Strings Are Close

LeetCode 1777 | Difficulty: Medium

DI String Match

LeetCode 979 | Difficulty: Easy

Edit Distance

LeetCode 72 | Difficulty: Medium

Encode and Decode Strings

LeetCode 271 | Difficulty: Medium

Encode and Decode TinyURL

LeetCode 535 | Difficulty: Medium

Excel Sheet Column Number

LeetCode 171 | Difficulty: Easy

Excel Sheet Column Title

LeetCode 168 | Difficulty: Easy

Final Value of Variable After Performing Operations

LeetCode 2137 | Difficulty: Easy

Find First Palindromic String in the Array

LeetCode 2231 | Difficulty: Easy

Find the Kth Largest Integer in the Array

LeetCode 2113 | Difficulty: Medium

Find Unique Binary String

LeetCode 2107 | Difficulty: Medium

First Unique Character in a String

LeetCode 387 | Difficulty: Easy

Fizz Buzz

LeetCode 412 | Difficulty: Easy

Generate Parentheses

LeetCode 22 | Difficulty: Medium

Group Anagrams

LeetCode 49 | Difficulty: Medium

Group Shifted Strings

LeetCode 249 | Difficulty: Medium

Implement strStr()

LeetCode 28 | Difficulty: Easy

Implement Trie (Prefix Tree)

LeetCode 208 | Difficulty: Medium

Integer to English Words

LeetCode 273 | Difficulty: Hard

Integer to Roman

LeetCode 12 | Difficulty: Medium

Isomorphic Strings

LeetCode 205 | Difficulty: Easy

Keyboard Row

LeetCode 500 | Difficulty: Easy

Largest Number

LeetCode 179 | Difficulty: Medium

Length of Last Word

LeetCode 58 | Difficulty: Easy

Letter Case Permutation

LeetCode 800 | Difficulty: Medium

Letter Combinations of a Phone Number

LeetCode 17 | Difficulty: Medium

Longest Common Prefix

LeetCode 14 | Difficulty: Easy

Longest Common Subsequence

LeetCode 1250 | Difficulty: Medium

Longest Happy String

LeetCode 1304 | Difficulty: Medium

Longest Palindrome

LeetCode 409 | Difficulty: Easy

Longest Palindromic Subsequence

LeetCode 516 | Difficulty: Medium

Longest Palindromic Substring

LeetCode 5 | Difficulty: Medium

Longest Repeating Character Replacement

LeetCode 424 | Difficulty: Medium

Longest Substring with At Least K Repeating Characters

LeetCode 395 | Difficulty: Medium

Longest Substring with At Most K Distinct Characters

LeetCode 340 | Difficulty: Medium

Longest Substring with At Most Two Distinct Characters

LeetCode 159 | Difficulty: Medium

Longest Substring Without Repeating Characters

LeetCode 3 | Difficulty: Medium

Longest Valid Parentheses

LeetCode 32 | Difficulty: Hard

Maximum Length of a Concatenated String with Unique Characters

LeetCode 1360 | Difficulty: Medium

Maximum Number of Balloons

LeetCode 1297 | Difficulty: Easy

Maximum Product of Word Lengths

LeetCode 318 | Difficulty: Medium

Minimum Add to Make Parentheses Valid

LeetCode 957 | Difficulty: Medium

Minimum Deletions to Make Character Frequencies Unique

LeetCode 1770 | Difficulty: Medium

Minimum Insertion Steps to Make a String Palindrome

LeetCode 1437 | Difficulty: Hard

Minimum Insertions to Balance a Parentheses String

LeetCode 1648 | Difficulty: Medium

Minimum Number of Swaps to Make the String Balanced

LeetCode 2095 | Difficulty: Medium

Minimum Time to Make Rope Colorful

LeetCode 1700 | Difficulty: Medium

Minimum Window Subsequence

LeetCode 727 | Difficulty: Hard

Minimum Window Substring

LeetCode 76 | Difficulty: Hard

Most Common Word

LeetCode 837 | Difficulty: Easy

Multiply Strings

LeetCode 43 | Difficulty: Medium

Next Greater Element III

LeetCode 556 | Difficulty: Medium

Next Palindrome Using Same Digits

LeetCode 1997 | Difficulty: Hard

Number of Substrings Containing All Three Characters

LeetCode 1460 | Difficulty: Medium

Number of Substrings With Only 1s

LeetCode 1636 | Difficulty: Medium

Open the Lock

LeetCode 753 | Difficulty: Medium

Palindrome Permutation

LeetCode 266 | Difficulty: Easy

Palindromic Substrings

LeetCode 647 | Difficulty: Medium

Ransom Note

LeetCode 383 | Difficulty: Easy

Reconstruct Itinerary

LeetCode 332 | Difficulty: Hard

Regular Expression Matching

LeetCode 10 | Difficulty: Hard

Remove K Digits

LeetCode 402 | Difficulty: Medium

Reorder Data in Log Files

LeetCode 974 | Difficulty: Medium

Reorganize String

LeetCode 778 | Difficulty: Medium

Repeated Substring Pattern

LeetCode 459 | Difficulty: Easy

Replace All Digits with Characters

LeetCode 1954 | Difficulty: Easy

Restore IP Addresses

LeetCode 93 | Difficulty: Medium

Reverse String

LeetCode 344 | Difficulty: Easy

Reverse String II

LeetCode 541 | Difficulty: Easy

Reverse Vowels of a String

LeetCode 345 | Difficulty: Easy

Reverse Words in a String

LeetCode 151 | Difficulty: Medium

Reverse Words in a String II

LeetCode 186 | Difficulty: Medium

Reverse Words in a String III

LeetCode 557 | Difficulty: Easy

Roman to Integer

LeetCode 13 | Difficulty: Easy

Rotate String

LeetCode 812 | Difficulty: Easy

Serialize and Deserialize Binary Tree

LeetCode 297 | Difficulty: Hard

Serialize and Deserialize BST

LeetCode 449 | Difficulty: Medium

Serialize and Deserialize N-ary Tree

LeetCode 765 | Difficulty: Hard

Shifting Letters

LeetCode 878 | Difficulty: Medium

Shortest Word Distance

LeetCode 243 | Difficulty: Easy

Shortest Word Distance II

LeetCode 244 | Difficulty: Medium

Shortest Word Distance III

LeetCode 245 | Difficulty: Medium

Simplify Path

LeetCode 71 | Difficulty: Medium

Smallest String Starting From Leaf

LeetCode 1030 | Difficulty: Medium

Sort Characters By Frequency

LeetCode 451 | Difficulty: Medium

Sort Features by Popularity

LeetCode 1919 | Difficulty: Medium

String Compression

LeetCode 443 | Difficulty: Medium

String to Integer (atoi)

LeetCode 8 | Difficulty: Medium

String Without AAA or BBB

LeetCode 1026 | Difficulty: Medium

Substring with Concatenation of All Words

LeetCode 30 | Difficulty: Hard

Substrings That Begin and End With the Same Letter

LeetCode 2225 | Difficulty: Medium

Text Justification

LeetCode 68 | Difficulty: Hard

Top K Frequent Words

LeetCode 692 | Difficulty: Medium

Unique Email Addresses

LeetCode 965 | Difficulty: Easy

Valid Anagram

LeetCode 242 | Difficulty: Easy

Valid Number

LeetCode 65 | Difficulty: Hard

Valid Palindrome

LeetCode 125 | Difficulty: Easy

Valid Palindrome II

LeetCode 680 | Difficulty: Easy

Valid Parentheses

LeetCode 20 | Difficulty: Easy

Valid Parenthesis String

LeetCode 678 | Difficulty: Medium

Wildcard Matching

LeetCode 44 | Difficulty: Hard

Word Break

LeetCode 139 | Difficulty: Medium

Word Break II

LeetCode 140 | Difficulty: Hard

Word Pattern

LeetCode 290 | Difficulty: Easy

Word Search

LeetCode 79 | Difficulty: Medium

Zigzag Conversion

LeetCode 6 | Difficulty: Medium