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DSA Problem Sheets
Data Structures & Algorithms
📋 70 Problems● Easy 33● Medium 32● Hard 5
☕ Java🐍 Python⚙️ C++🟡 JavaScript
Showing 13 of 70 problems · Easy · String
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Title
Difficulty
22
Check If a Sentence Reads the Same Ignoring Case and Symbols
Easy
23
Valid Anagram
Easy
24
Valid Parentheses
Easy
53
Reverse a String In-Place
Easy
54
Length of the Last Word in a Sentence
Easy
55
Longest Common Prefix of an Array of Strings
Easy
57
Add Two Binary Strings
Easy
61
Remove the Outermost Parentheses From Every Primitive Group
Easy
62
Check If One String Is a Rotation of Another
Easy
63
Find the First Non-Repeating Character in a String
Easy
63
Find the First Non-Repeating Character in a String
Easy
65
Check if Two Strings Are Isomorphic
Easy
65
Check if Two Strings Are Isomorphic
Easy