Level1

Contents

# Sr
Table Of Contents

01

RecursionAndBacktracking

02

Stacks

03

Queues

04

Linked List

05

Generic Tree

06

Binary Tree

07

Binary Search Tree

08

Hash & Heap

09

Graph

10

DP

11

Time Complexity

RecursionAndBacktracking PDF

Problem
Java Solution
todo

Print Decreasing Easy

Solution

  • - [x] completed?

  • - [ ] todo

Print Increasing Easy

Solution

- [ ] todo

Print Increasing Decreasing Easy

Solution

- [] todo

Factorial Easy

Solution

- [] todo

Power-linear Easy

Solution

- [] todo

Power-logarithmic Easy

Solution

- [] todo

Print Zigzag Easy

Solution

- [] todo

Tower Of Hanoi

Solution

- [] todo

Problem
Java Solution

Display Array Easy

Solution

Display Array In Reverse Easy

Solution

Max Of An Array Easy

Solution

First Index Easy

Solution

Last Index Easy

Solution

All Indices Of Array

Solution

Problem
Java Solution

Get Subsequence Easy

Solution

Get Kpc Easy

Solution

Get Stair Paths Easy

Solution

Get Maze Paths Easy

Solution

Get Maze Path With Jumps

Solution

Problem
Java Solution

Print Subsequence Easy

Solution

Print Kpc Easy

Solution

Print Stair Paths Easy

Solution

Print Maze Paths Easy

Solution

Print Maze Paths With Jumps Easy

Solution

Print Permutations Easy

Solution

Print Encodings

Solution

Problem
Java Solution

Flood Fill Easy

Solution

Target Sum Subsets Easy

Solution

N Queens(subset approach)

Solution

N Queens(level option approach)

Solution

Knights Tour Easy

Solution

Stacks PDF

Problem
Java Solution

Duplicate Bracket

Solution

Balanced Bracket

Solution

Next Greater Element to right

Solution

Stock span

Solution

Largest Are Histogram

Solution

Sliding Window Maximam

Solution

Infix evaluation

Solution

infix conversion

Solution

Postfix evaluation and conversion

Solution

Prefix Evaluation and conversion

Solution

Celebrity Problem

Solution

Merge Overlapping interval

Solution

Smallest Number Following pattern

Solution

Normal stack

Solution

Dynamic stack

Solution

Minimum Stack -1

Solution

Minimum Stack - constant space

Solution

Queues PDF

Problem
Java Solution

Normal queue

Solution

Dynamic Queue

Solution

Queue to Stack Adapter- push efficient

Solution

Queue to Stack Adapter- pop efficient

Solution

Stack to Queue Adapter-Add efficient

Solution

Stack to Queue Adapter-Remove efficient

Solution

Two Stacks in an Array

Solution

Linked List PDF PDF2

Problem
Java Solution

Add Last In Linked List

Solution

Display A Linkedlist

Solution

Remove First In Linkedlist

Solution

Get Value In Linked List

Solution

Add First In Linked List

Solution

Add At Index In Linked List

Solution

Remove Last In Linked List

Solution

Remove At Index In Linked List

Solution

Reverse A Linked List (data Iterative)

Solution

Reverse Linked List (pointer Iterative)

Solution

Linked List To Stack Adapter

Solution

Linked List To Queue Adapter

Solution

Problem
Java Solution

Kth Node From End Of Linked List

Solution

Mid Of Linked List

Solution

Merge Two Sorted Linked Lists

Solution

Merge Sort A Linked List

Solution

Remove Duplicates In A Sorted Linked List

Solution

Odd Even Linked List Medium

Solution

K Reverse In Linked List

Solution

Display Reverse (recursive) - Linked List

Solution

Reverse Linked List (pointer - Recursive)

Solution

Is Linked List A Palindrome?

Solution

Problem
Java Solution

Fold A Linked List

Solution

Add Two Linked Lists

Solution

Intersection Point Of Linked Lists

Solution

Copy Linkedlist With Random Pointers

Solution

Generic Tree PDF PDF2

Problem
Java Solution
Articles

Generic Trees - Introduction And Data Members

Solution

Articles

Generic Tree - Constructor

Solution

Articles

Display A Generic Tree

Solution

Articles

Size Of Generic Tree

Solution

Articles

Maximum In A Generic Tree

Solution

Articles

Height Of A Generic Tree

Solution

Articles

Problem
Java Solution
Articles

Generic Tree - Traversals (pre-order, Post-order)

Solution

Articles

Level-order Of Generic Tree

Solution

Articles

Levelorder Linewise (generic Tree)

Solution

Articles

Levelorder Linewise Zig Zag

Solution

Articles

Level Order Traversals - More Approaches

Solution

Articles

Problem
Java Solution
Articles

Mirror A Generic Tree

Solution

Articles

Remove Leaves In Generic Tree

Solution

Articles

Linearize A Generic Tree

Solution

Articles

Linearize A Generic Tree - Efficient Approach

Solution

Articles

Problem
Java Solution
Articles

Find element In Generic Tree

Solution

Articles

Node To Root Path In Generic Tree

Solution

Articles

Lowest Common Ancestor (generic Tree)

Solution

Articles

Distance Between Two Nodes In A Generic Tree

Solution

Articles

Problem
Java Solution
Articles

Are Trees Similar In Shape

Solution

Articles

Are Trees Mirror In Shape

Solution

Articles

Is Generic Tree Symmetric

Solution

Articles

Problem
Java Solution
Articles

Multisolver For Generic Tree

Solution

Articles

Predecessor And Successor Of An Element

Solution

Articles

Ceil And Floor In Generic Tree

Solution

Articles

Kth Largest Element In Tree

Solution

Articles

Node With Maximum Subtree Sum

Solution

Articles

Diameter Of Generic Tree

Solution

Articles

Iterative Preorder And Postorder Of Generic Tree

Solution

Articles

Iterable And Iterator

Solution

Articles

Binary Tree PDF PDF2

Problem
Java Solution
Articles

Binary Tree - Introduction And Data Members

Solution

Articles

Binary Tree - Constructor

Solution

Articles

Display A Binary Tree

Solution

Articles

Size, Sum, Maximum And Height Of A Binary Tree

Solution

Articles

Traversals In A Binary Tree

Solution

Articles

Levelorder Traversal Of Binary Tree

Solution

Articles

Iterative Pre, Post And Inorder Traversals Of Binary Tree

Solution

Articles

Problem
Java Solution
Articles

Find And Nodetorootpath In Binary Tree

Solution

Articles

Print K Levels Down

Solution

Articles

Print Nodes K Distance Away

Solution

Articles

Path To Leaf From Root In Range

Solution

Articles

Problem
Java Solution
Articles

Transform To Left-cloned Tree

Solution

Articles

Transform To Normal From Left-cloned Tree

Solution

Articles

Print Single Child Nodes

Solution

Articles

Remove Leaves In Binary Tree

Solution

Articles

Diameter Of A Binary Tree

Solution

Articles

Tilt Of Binary Tree

Solution

Articles

Problem
Java Solution
Articles

Is A Binary Search Tree

Solution

Articles

Is Balanced Tree

Solution

Articles

Largest Bst Subtree

Solution

Articles

Binary Search Tree PDF PDF2

Problem
Java Solution
Articles

Binary Search Tree - Introduction

Solution

Binary Search Tree - Constructor

Solution

Size, Sum, Max, Min, Find In Bst

Solution

Add Node To Bst

Solution

Replace With Sum Of Larger

Solution

Lca Of Bst

Solution

Print In Range

Solution

Target Sum Pair In Bst

Solution

Target Sum Pair - Bst - Alternate Approaches

Solution

Remove Node From Bst Medium

Solution

Hash & Heap PDF PDF2

Problem
Java Solution
Articles

Heaps - Introduction And Usage

Solution

Articles

K Largest Elements

Solution

Articles

Sort K-sorted Array

Solution

Articles

Median Priority Queue

Solution

Articles

Merge K Sorted Lists

Solution

Articles

Hashmap - Introduction

Solution

Articles

Highest Frequency Character

Solution

Articles

Get Common Elements - 1

Solution

Articles

Get Common Elements - 2

Solution

Articles

Longest Consecutive Sequence Of Elements

Solution

Articles

Write Priority Queue Using Heap

Solution

Articles

Write Hashmap

Solution

Articles

Efficient Heap Constructor

Solution

Articles

Heap - Comparable V/s Comparator

Solution

Articles

Graph PDF PDF2

Problem
Java Solution
Articles

Introduction To Graphs And Its Representation

Solution

Has Path?

Solution

Print All Paths

Solution

Multisolver - Smallest, Longest, Ceil, Floor, Kthlargest Path

Solution

Get Connected Components Of A Graph

Solution

Is Graph Connected

Solution

Number Of Islands

Solution

Perfect Friends

Solution

Hamiltonian Path And Cycle

Solution

Knights Tour

Solution

Breadth First Traversal

Solution

Is Graph Cyclic

Solution

Is Graph Bipartite

Solution

Spread Of Infection

Solution

Shortest Path In Weights (dijkstra)

Solution

Minimum Wire Required To Connect All Pcs (prims algo)

Solution

Order Of Compilation

Solution

Iterative Depth First Traversal

Solution

Detect cycle in a directed graph Practice GeeksforGeeks

Solution

Rotting Oranges - LeetCode

Solution

Evaluate Division - LeetCode

Solution

Course Schedule - LeetCode

Solution

DP PDF PDF2

TimeComplexity PDF PDF2

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