# Status Problem video Level Completes Likes
522

Check If Student is eligible for an Attendance Reward

Beginner % 0
519

Random character in a given string - Java

Beginner % 0
503

Minimum Deletions to make the occurrence of each character unique.

Hard % 1
499

Compare two version numbers of a software

Medium % 1
496

Minimum number of times String A is repeated to such that B is substring of A

Beginner % 1
483

Find Lexicographically smallest or largest substring of size k

Beginner % 0
482

Largest word in dictionary by removing a few characters from the given string

Beginner % 0
480

Check if one string is a subsequence of another string.

Beginner % 0
437

Lexicographically previous permutation With One swap

Medium % 1
415

Hamming Distance between two given strings

Beginner % 0
394

Find the maximum number present in a String

Beginner % 0
390

Convert Prefix to Postfix Expression

Medium % 0
387

Convert Postfix to Prefix Expression

Medium % 0
386

Convert Integer to Roman

Medium % 0
385

String to Integer (AtoI - ASCII to Integer) - Recursive Solution

Medium % 0
378

Longest contiguous character in a given String - O(N) Solution

Beginner % 0
377

Convert Postfix to Infix Expression

Medium % 0
375

String to Integer (AtoI - ASCII to Integer)

Beginner % 1
373

Longest substring with at most two unique characters

Medium % 0
371

Convert Infix to Prefix Expression

Medium % 0
369

Find duplicates Characters in the given String

Beginner % 0
365

Convert Infix to Postfix Expression

Medium % 0
363

Evaluation of Infix expressions

Medium % 0
361

Convert Prefix to Infix Expression

Medium % 0
358

Infix, Postfix and Prefix Notations/Expressions

Beginner % 0
354

Valid Multiple Parentheses

Medium % 1
346

Valid Brackets – Part 2 | Stack Method

Beginner % 0
344

Given two strings validate the output string

Beginner % 0
343

Generate all the strings of length n from 0 to k-1

Medium % 0
331

Find Largest and Smallest word in a given String

Beginner % 0
323

How to Reverse Text: Stack Method for String Reversal

Beginner % 0
313

Check if two Strings are equal without using built-in function

Beginner % 0
312

Remove Vowels from a given String

Beginner % 0
305

Find number of Distinct Permutations of a String

Medium % 0

Check If Student is eligible for an Attendance Reward

Random character in a given string - Java

Minimum Deletions to make the occurrence of each character unique.

Compare two version numbers of a software

Minimum number of times String A is repeated to such that B is substring of A

Find Lexicographically smallest or largest substring of size k

Largest word in dictionary by removing a few characters from the given string

Check if one string is a subsequence of another string.

Lexicographically previous permutation With One swap

Hamming Distance between two given strings

Find the maximum number present in a String

Convert Prefix to Postfix Expression

Convert Postfix to Prefix Expression

Convert Integer to Roman

String to Integer (AtoI - ASCII to Integer) - Recursive Solution

Longest contiguous character in a given String - O(N) Solution

Convert Postfix to Infix Expression

String to Integer (AtoI - ASCII to Integer)

Longest substring with at most two unique characters

Convert Infix to Prefix Expression

Find duplicates Characters in the given String

Convert Infix to Postfix Expression

Evaluation of Infix expressions

Convert Prefix to Infix Expression

Infix, Postfix and Prefix Notations/Expressions

Valid Multiple Parentheses

Valid Brackets – Part 2 | Stack Method

Given two strings validate the output string

Generate all the strings of length n from 0 to k-1

Find Largest and Smallest word in a given String

How to Reverse Text: Stack Method for String Reversal

Check if two Strings are equal without using built-in function

Remove Vowels from a given String

Find number of Distinct Permutations of a String