Featured Lists Top 20 Problems on Dynamic programming Top 10 Problems on Backtracking Top 20 Problems on Graph Top 25 Problems on Trees Top 10 Problems on Bits Manipulation Top 15 Problems in LinkedList All Problems # Status Problem video Level Completes Likes 519 Random character in a given string - Java Beginner % 0 518 Replace Elements with Greatest Element on Right Beginner % 0 517 Count number of pairs in an array with sum = K Medium % 0 516 Count similar words in a given array Beginner % 1 515 Maximum distance from the nearest person Medium % 1 514 Sort 0, 1, 2 in an array - Part 2 Beginner % 0 513 Sort 0, 1, 2 in an array - Part 1 Beginner % 1 512 Override the compare function for Collections.sort method Beginner % 0 511 Sum of all the overlapping elements Beginner % 0 510 Design a data structure for Candidate Voting Problem Medium % 0 509 Find the Number of Contiguous Parking Areas Medium % 1 508 Get specific row K in a Pascal Triangle Medium % 0 507 Design data structure for players and ranks Medium % 0 506 Maximum Bipartite Matching Problem Hard % 0 505 Override the compare function for Arrays.sort method - Java Beginner % 0 504 What is a Pascal Triangle? Beginner % 0 503 Minimum Deletions to make the occurrence of each character unique. Hard % 1 502 Calculate tax on income as per given tax brackets. Beginner % 0 501 Valid Pickup and Delivery options Hard % 0 500 Print Top 10 videos from List Beginner % 0 499 Compare two version numbers of a software Medium % 1 498 The largest number can be formed from the given number Beginner % 0 497 Minimum number of adjacent swaps to sort the given array Hard % 1 496 Minimum number of times String A is repeated to such that B is substring of A Beginner % 1 495 Print all nested directories and files in a given directory - Recursion Medium % 0 494 Check if the given playlist of programs is valid Beginner % 1 493 Maximum meetings in one room Medium % 0 492 Find the number of pairs with even XOR Beginner % 0 491 Unresolved references error - Django in PyCharm and IntelliJ Beginner % 0 490 Given an array, Find the number of all pairs with even sum Beginner % 0 489 The number of cycles in a given array of integers. Hard % 0 488 Check if given sudoku is valid or not Medium % 0 487 Find Election Winner Beginner % 0 486 Sort the indexes of the array as per the elements of the array Medium % 0 485 Construct the Largest number from the given digits Beginner % 1 Random character in a given string - Java Replace Elements with Greatest Element on Right Count number of pairs in an array with sum = K Count similar words in a given array Maximum distance from the nearest person Sort 0, 1, 2 in an array - Part 2 Sort 0, 1, 2 in an array - Part 1 Override the compare function for Collections.sort method Sum of all the overlapping elements Design a data structure for Candidate Voting Problem Find the Number of Contiguous Parking Areas Get specific row K in a Pascal Triangle Design data structure for players and ranks Maximum Bipartite Matching Problem Override the compare function for Arrays.sort method - Java What is a Pascal Triangle? Minimum Deletions to make the occurrence of each character unique. Calculate tax on income as per given tax brackets. Valid Pickup and Delivery options Print Top 10 videos from List Compare two version numbers of a software The largest number can be formed from the given number Minimum number of adjacent swaps to sort the given array Minimum number of times String A is repeated to such that B is substring of A Print all nested directories and files in a given directory - Recursion Check if the given playlist of programs is valid Maximum meetings in one room Find the number of pairs with even XOR Unresolved references error - Django in PyCharm and IntelliJ Given an array, Find the number of all pairs with even sum The number of cycles in a given array of integers. Check if given sudoku is valid or not Find Election Winner Sort the indexes of the array as per the elements of the array Construct the Largest number from the given digits 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16