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 370 Find third largest element in a given array Beginner % 0 366 Java program to find the largest element in array Beginner % 0 361 Convert Prefix to Infix Expression Medium % 0 360 Least Recently Used (LRU) Cache – Using LinkedHashSet and Deque | Set 2 Hard % 0 356 Check if array contains all unique or distinct numbers Beginner % 0 355 Product of all Unique elements in a given array Beginner % 0 352 Check if given number is perfect square - O(√N) Solution Beginner % 0 349 Selection Sort Beginner % 0 348 Print Number with its Sign in Java Beginner % 0 347 Find the nearest building which has bike | Find nearest specific vertex from source in a graph. Hard % 0 345 Find the roots of Quadratic Equation – Java Program Beginner % 0 343 Generate all the strings of length n from 0 to k-1 Medium % 0 342 Find two smallest elements in a given array Beginner % 0 341 Front and Back Search in an Array Beginner % 0 340 Print all Unique elements in a given array Beginner % 0 337 Find first two largest elements in a given array Beginner % 0 336 Calculate Logn base r – Java Implementation Beginner % 0 335 Max Flow Problem – Introduction Hard % 0 333 Sum the elements of an Array Beginner % 0 332 Insertion Sort Beginner % 0 329 Rotate the given array in cycles Beginner % 0 328 Heap Sort Medium % 0 327 Print First n numbers in Fibonacci Series Beginner % 0 326 Find the Area and Perimeter of Rectangle Beginner % 0 324 Stack Data Structure – Introduction and Implementation Beginner % 0 322 Dijkstra’s – Shortest Path Algorithm (SPT) – Adjacency List and Priority Queue – Java Implementation Hard % 0 321 Bubble Sort and Optimized Bubble Sort Beginner % 1 320 Find the Area of Triangle using base and height Beginner % 0 319 Get the Sum of Digits in a number till it become a single digit Medium % 0 317 Check if given number is Prime - O(√N) Solution Medium % 0 316 Print First N Prime Numbers Beginner % 0 315 Print My IP Address Beginner % 0 314 Find the Circumference of a Circle Beginner % 0 311 Linear Search Algorithm Beginner % 0 310 Dijkstra’s – Shortest Path Algorithm (SPT) – Adjacency List and Min Heap Hard % 0 Find third largest element in a given array Java program to find the largest element in array Convert Prefix to Infix Expression Least Recently Used (LRU) Cache – Using LinkedHashSet and Deque | Set 2 Check if array contains all unique or distinct numbers Product of all Unique elements in a given array Check if given number is perfect square - O(√N) Solution Selection Sort Print Number with its Sign in Java Find the nearest building which has bike | Find nearest specific vertex from source in a graph. Find the roots of Quadratic Equation – Java Program Generate all the strings of length n from 0 to k-1 Find two smallest elements in a given array Front and Back Search in an Array Print all Unique elements in a given array Find first two largest elements in a given array Calculate Logn base r – Java Implementation Max Flow Problem – Introduction Sum the elements of an Array Insertion Sort Rotate the given array in cycles Heap Sort Print First n numbers in Fibonacci Series Find the Area and Perimeter of Rectangle Stack Data Structure – Introduction and Implementation Dijkstra’s – Shortest Path Algorithm (SPT) – Adjacency List and Priority Queue – Java Implementation Bubble Sort and Optimized Bubble Sort Find the Area of Triangle using base and height Get the Sum of Digits in a number till it become a single digit Check if given number is Prime - O(√N) Solution Print First N Prime Numbers Print My IP Address Find the Circumference of a Circle Linear Search Algorithm Dijkstra’s – Shortest Path Algorithm (SPT) – Adjacency List and Min Heap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16