# Status Problem video Level Completes Likes 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 % 0 479 Most frequent word Beginner % 0 478 Efficient Robot Problem - Find Minimum Trips Hard % 0 476 Find subarray with a sum to given number-2 | Handle negative numbers Medium % 0 475 Sort the two dimensional (2D) array - In-place Medium % 0 473 Given an array, count the number of pairs with a given sum. Beginner % 0 471 Two Sum Problem Beginner % 0 470 Find if any two intervals overlap in given intervals Medium % 0 469 Given an array, find the number of all pairs with odd sum. Medium % 0 468 Unique subsets with a given sum with allowed repeated digits. Medium % 0 466 Lexicographically next permutation With One swap Medium % 1 464 Sum of distinct elements among two given sets Beginner % 0 462 Stable Marriage Problem - Gale–Shapley Algorithm Hard % 0 459 Given an array, find three-element sum closest to Zero Medium % 1 458 Print sorted unique elements of a given array Beginner % 0 457 Given an array, print all unique subsets with a given sum. Medium % 0 456 Subsets Elements less than K. Medium % 0 455 Replace array elements with maximum element on the right. Medium % 0 446 Print all middle elements of the given matrix/2D array. Beginner % 1 445 Depth-First Search (DFS) in 2D Matrix/2D-Array - Recursive Solution Beginner % 1 442 Find the number of distinct Islands OR connected components. Hard % 0 440 Given an array, Print sum of all subsets Beginner % 1 434 Print boundary of given matrix/2D array. Beginner % 1 433 Depth-First Search (DFS) in 2D Matrix/2D-Array - Iterative Solution Beginner % 0 432 Breadth-First Search (BFS) in 2D Matrix/2D-Array Beginner % 1 427 Number of Islands using BFS Medium % 0 422 Print Stack in reverse order Beginner % 0 421 Sort a given stack - Using Recursion Hard % 1 419 Print all subsets of an array with a sum equal to zero Medium % 0 413 ZigZag OR Diagonal traversal in 2d array/Matrix using queue Medium % 0 408 Number of Islands Medium % 1 406 Evaluation of Postfix Expressions (Polish Postfix notation) | Set 2 Medium % 0 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 Most frequent word Efficient Robot Problem - Find Minimum Trips Find subarray with a sum to given number-2 | Handle negative numbers Sort the two dimensional (2D) array - In-place Given an array, count the number of pairs with a given sum. Two Sum Problem Find if any two intervals overlap in given intervals Given an array, find the number of all pairs with odd sum. Unique subsets with a given sum with allowed repeated digits. Lexicographically next permutation With One swap Sum of distinct elements among two given sets Stable Marriage Problem - Gale–Shapley Algorithm Given an array, find three-element sum closest to Zero Print sorted unique elements of a given array Given an array, print all unique subsets with a given sum. Subsets Elements less than K. Replace array elements with maximum element on the right. Print all middle elements of the given matrix/2D array. Depth-First Search (DFS) in 2D Matrix/2D-Array - Recursive Solution Find the number of distinct Islands OR connected components. Given an array, Print sum of all subsets Print boundary of given matrix/2D array. Depth-First Search (DFS) in 2D Matrix/2D-Array - Iterative Solution Breadth-First Search (BFS) in 2D Matrix/2D-Array Number of Islands using BFS Print Stack in reverse order Sort a given stack - Using Recursion Print all subsets of an array with a sum equal to zero ZigZag OR Diagonal traversal in 2d array/Matrix using queue Number of Islands Evaluation of Postfix Expressions (Polish Postfix notation) | Set 2 1 2 3 4 5 6