# Status Problem video Level Completes Likes 551 Reverse a linked list using stack Medium % 0 433 Depth-First Search (DFS) in 2D Matrix/2D-Array - Iterative Solution Beginner % 0 422 Print Stack in reverse order Beginner % 0 421 Sort a given stack - Using Recursion Hard % 1 416 Evaluation of Prefix Expressions (Polish Notation) | Set 2 Medium % 0 410 Evaluation of Prefix Expressions (Polish Notation) | Set 1 Medium % 0 398 Smallest Number after Removing K digits Hard % 0 392 Reverse a Stack using recursion - In Place (Without using extra memory) Hard % 1 390 Convert Prefix to Postfix Expression Medium % 0 388 Sort a given stack - Using Temporary Stack Medium % 0 377 Convert Postfix to Infix Expression Medium % 0 371 Convert Infix to Prefix Expression Medium % 0 365 Convert Infix to Postfix Expression Medium % 0 363 Evaluation of Infix expressions Medium % 0 362 Stack Java Class - Explained Beginner % 0 361 Convert Prefix to Infix Expression Medium % 0 358 Infix, Postfix and Prefix Notations/Expressions Beginner % 0 354 Valid Multiple Parentheses Medium % 1 324 Stack Data Structure – Introduction and Implementation Beginner % 0 323 How to Reverse Text: Stack Method for String Reversal Beginner % 0 193 Implement Stack Using Linked List Beginner % 0 108 Queue with Stacks: Efficient Implementation Using Stack Operations Medium % 0 Reverse a linked list using stack Depth-First Search (DFS) in 2D Matrix/2D-Array - Iterative Solution Print Stack in reverse order Sort a given stack - Using Recursion Evaluation of Prefix Expressions (Polish Notation) | Set 2 Evaluation of Prefix Expressions (Polish Notation) | Set 1 Smallest Number after Removing K digits Reverse a Stack using recursion - In Place (Without using extra memory) Convert Prefix to Postfix Expression Sort a given stack - Using Temporary Stack Convert Postfix to Infix Expression Convert Infix to Prefix Expression Convert Infix to Postfix Expression Evaluation of Infix expressions Stack Java Class - Explained Convert Prefix to Infix Expression Infix, Postfix and Prefix Notations/Expressions Valid Multiple Parentheses Stack Data Structure – Introduction and Implementation How to Reverse Text: Stack Method for String Reversal Implement Stack Using Linked List Queue with Stacks: Efficient Implementation Using Stack Operations 1
