Video Link

Problems

Easy

• Defanging an Ip address
• Shuffle String
• Goal Parser Interpretation
• Count Items Matching a rule
• Sorting the Sentence
• Check if two strings are equivalent
• To Lower Case
• Determine if string halves are alike
• Decrypt String from Alphabet to Integer Mapping
• Number of Strings That Appear as Substrings in Word
• Robot Return to Origin
• Reverse Words in a String III
• Excel Sheet Column Title
• Implement strStr()
• Long Pressed Name
• Valid Palindrome
• Valid Palindrome II
• Longest Common Prefix
• Maximum Repeating Substring
• Check if Binary String Has at Most One Segment of Ones
• Merge Strings Alternately
• Reverse Prefix of Word
• Roman to Integer
• Valid Parentheses
• Length of last word

Medium

• Jump Game VII
• Split Two Strings to Make Palindrome
• Number of Ways to Split a String
• Sentence Similarity III
• Repeated String Match
• Next Greater Element III
• Maximum Number of Removable Characters
• Swap Adjacent in LR String
• Multiply Strings
• Basic Calculator II
• Minimum Length of String After Deleting Similar Ends
• Number of Substrings With Only 1s
• Count Number of Homogenous Substrings
• Get Equal Substrings Within Budget
• Shifting Letters
• Minimum Time Difference
• Find Kth Bit in Nth Binary String
• Camelcase Matching
• Print Words Vertically

Hard

• Valid Number
• Regular Expression Matching
• Last Substring in Lexicographical Order
• Basic Calculator
• Minimum Number of Operations to Make String Sorted
• Check If String Is Transformable With Substring Sort Operations
• Orderly Queue
• Special Binary String

Additionally

• Click "Show problem tags" and do questions that have tags for things we have learnt so far only.