# Status Problem video Level Completes Likes 562 Merge Strings Alternately - Leetcode Beginner % 1 522 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 % 0 467 Print all steps to convert one string to another string Medium % 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 Merge Strings Alternately - Leetcode 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. Print all steps to convert one string to 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) 1 2 3