DSKaKhel

Learning Data Structures is a like of Khel (Game), for getting good at this Khel, learn new data structures via contributing to this repository.

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Contributing Guidelines

For contributions checkout new updated guidelines

Hacktober Fest 22 Updates

PRs count if:

Submitted during the month of October AND
- Submitted in a public repo AND (
- The PR is labelled as hacktoberfest-accepted by a maintainer OR
- Submitted in a repo with the hacktoberfest topic AND (
  - The PR is merged OR
  - The PR has been approved
)

)

As a part of this update your PRs will be marked as hacktoberfest-accepted label before merging and don't get shocked PRs opened in this repository we will be counted in the Hacktober Fest 22.

Happy Hacking !

Code Of Conduct

We are following Contributor Covenant Code of Conduct.

ARRAYS

1D Arrays
- C
- Simple
- Using heap memory
- C++
- JAVA
2D Arrays
- C
- Simple
- Using heap memory
- C++
- JAVA
3D Arrays
- C
- Simple
- Using heap memory
- C++
- JAVA
4D Arrays
- C
- C++
- JAVA
INBUILT
- Arrays class in JAVA
MISC
- JAGGED
- C
- Arrangement and Rearrangement
- Rearrange Positive and Negative
  - C++
- Replace even in the stream
  - C++
- ARRAY ROTATION
- Rotate array in O(n)
  - C++
- Rotate array to right
  - JAVA
- Rotate array cyclically
  - C++
- Rotate array by K
  - C++
- Rotate matrix by 90
  - C++
- Find the min count to get original array from rotated array
  - C++
- Find Maximum Hamming Distance
  - C++
- Find Maximum value with only rotations allowed
  - C++
- Find Minimum Element in Rotated Sorted Array
  - C++
- Find pair with given Sum in Rotated Sorted Array
  - C++
- Occurances
- Find Maximum odd count
  - C++
- Find missing number with the given duplicate
  - C++
- Find pairs with sum K
  - C++
- Occurance of particular number
  - C++
- Row and Column Sum
  - C++
- Order Statistics
- Find smallest in 2d matrix
  - C++
- Find largest element in array
  - C++
- Find Mean and Median of the array
  - C++
- Find the K largest Smallest Element
  - C++
- Find the largest 3 elements
  - C++
- Pattern Printing
- Spiral Order Matrix
  - C++
  - JAVA

STRINGS

LISTS

SINGLE
DOUBLE
- C
- JAVA
CIRCULAR
INBUILT LISTS
- LINKED LIST
- JAVA
- ARRAYLIST
- JAVA
- PYTHON
- VECTORS
- C++
- JAVA
MISC
- Find the nth node from the end in Single Linked List
- JAVA
  - APPROACH 1: Compute the size while adding
  - APPROACH 2: Using two current pointers
  - APPROACH 3: Using hashtable
  - APPROACH 4: Using Hashtable while adding
  - APPROACH 5: Finding node in one scan
  - APPROACH 6: Using recursion

STACKS

QUEUES

NORMAL QUEUE

DOUBLE ENDED QUEUE

CIRCULAR QUEUE

TREES

BINARY TREES

TRAVERSALS
- DEPTH FIRST SEARCH
- INORDER
  - C
  - ITERATIVE
  - RECURSIVE
  - C++
  - RECURSIVE
  - JAVA
  - ITERATIVE
  - RECURSIVE
- PREORDER
  - C++
  - RECURSIVE
  - JAVA
  - ITERATIVE
  - RECURSIVE
- POSTORDER
  - C++
  - RECURSIVE
  - JAVA
  - ITERATIVE
  - RECURSIVE
- BREADTH FIRST SEARCH
- LEVEL ORDER
  - C
  - C++
  - JAVA
MISC
- Construct Tree using Inorder and Preorder
- C
- Construct Tree with Inorder and Postorder
- C++
- Find right nodes
- C++
- Print odd level nodes
- C++
- Print Top View of Binary Tree
- C++
- Print Cousins of a given node in Binary Tree
- C++
- Count leaf and non leaf nodes
- C++
- Find the height of the tree
- C++
- Construct Mirror Tree
- C++

HEAPS

GRAPHS

Representation of Graph - Adjacency list
- JAVA

TECHOUS / DSKaKhel

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