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Solutions to the most commonly asked interview problems for aspiring software developers. Questions are hand-picked from a mix of platforms like Leetcode, Hackerrank, GFG etc.

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534 Commits
0-1 Knapsack - Memoization.cpp
0-1 Knapsack - Memoization.cpp
 
 
0-1 Knapsack - TopDown.cpp
0-1 Knapsack - TopDown.cpp
 
 
2 sum - BST.cpp
2 sum - BST.cpp
 
 
2 sum using Hash Table.cpp
2 sum using Hash Table.cpp
 
 
2-Strings.cpp
2-Strings.cpp
 
 
2_Sum_Target.cpp
2_Sum_Target.cpp
 
 
2_sum.cpp
2_sum.cpp
 
 
3 and 5 FizzBuzz.cpp
3 and 5 FizzBuzz.cpp
 
 
3Sum Closest.cpp
3Sum Closest.cpp
 
 
4-sum.cpp
4-sum.cpp
 
 
Add Digits.cpp
Add Digits.cpp
 
 
Add Two Numbers.cpp
Add Two Numbers.cpp
 
 
All Numbers Disappeared in an Array.cpp
All Numbers Disappeared in an Array.cpp
 
 
All Unique Permutations of an array.cpp
All Unique Permutations of an array.cpp
 
 
Anagrams.cpp
Anagrams.cpp
 
 
Apples & Oranges.cpp
Apples & Oranges.cpp
 
 
Area Using Abstract Class.java
Area Using Abstract Class.java
 
 
Array Manipulation.cpp
Array Manipulation.cpp
 
 
Array Partition I.cpp
Array Partition I.cpp
 
 
Array Queries.cpp
Array Queries.cpp
 
 
Array Subset of another array.cpp
Array Subset of another array.cpp
 
 
BST_Insertion.cpp
BST_Insertion.cpp
 
 
BST_Mode.cpp
BST_Mode.cpp
 
 
Balanced Tree.cpp
Balanced Tree.cpp
 
 
Bank Interest Rates Using Interface.java
Bank Interest Rates Using Interface.java
 
 
Baseball Game.cpp
Baseball Game.cpp
 
 
Best Time to Buy and Sell Stock II.cpp
Best Time to Buy and Sell Stock II.cpp
 
 
Best Time to Buy and Sell Stock.cpp
Best Time to Buy and Sell Stock.cpp
 
 
Binary Search : PeakElement.cpp
Binary Search : PeakElement.cpp
 
 
Binary Search Tree Implementation.c
Binary Search Tree Implementation.c
 
 
Binary Search Tree from Preorder Traversal.cpp
Binary Search Tree from Preorder Traversal.cpp
 
 
Binary Search.cpp
Binary Search.cpp
 
 
Binary Tree Tilt.cpp
Binary Tree Tilt.cpp
 
 
Binary Tree To DLL.cpp
Binary Tree To DLL.cpp
 
 
Binary Tree Zigzag Level Order Traversal.cpp
Binary Tree Zigzag Level Order Traversal.cpp
 
 
Binary number to decimal number.cpp
Binary number to decimal number.cpp
 
 
Bit Difference.cpp
Bit Difference.cpp
 
 
Bottom View Of Binary Tree.cpp
Bottom View Of Binary Tree.cpp
 
 
Bottom View Of Tree.cpp
Bottom View Of Tree.cpp
 
 
Boundary Of Binary Tree.cpp
Boundary Of Binary Tree.cpp
 
 
Breadth First Search - Graph .cpp
Breadth First Search - Graph .cpp
 
 
Breadth First Traversal.cpp
Breadth First Traversal.cpp
 
 
Burn Binary Tree.cpp
Burn Binary Tree.cpp
 
 
Characters By Frequency.cpp
Characters By Frequency.cpp
 
 
Check Capital.cpp
Check Capital.cpp
 
 
Check Completeness of a Binary Tree..cpp
Check Completeness of a Binary Tree..cpp
 
 
Check if All A's Appears Before All B's.cpp
Check if All A's Appears Before All B's.cpp
 
 
Check if Numbers Are Ascending in a Sentence.cpp
Check if Numbers Are Ascending in a Sentence.cpp
 
 
Check if the Sentence Is Pangram.cpp
Check if the Sentence Is Pangram.cpp
 
 
CheckBalanced.cpp
CheckBalanced.cpp
 
 
Circular Linked List Traversal.cpp
Circular Linked List Traversal.cpp
 
 
Climb Stairs.cpp
Climb Stairs.cpp
 
 
Climbing Stairs.cpp
Climbing Stairs.cpp
 
 
Coin Change - Minimum Coins.cpp
Coin Change - Minimum Coins.cpp
 
 
Coin Change - Total No Of Ways.cpp
Coin Change - Total No Of Ways.cpp
 
 
Combination Sum II.cpp
Combination Sum II.cpp
 
 
Combination Sum.cpp
Combination Sum.cpp
 
 
Combinations.cpp
Combinations.cpp
 
 
Compare two linked lists.cpp
Compare two linked lists.cpp
 
 
Complement of Base 10 Integer.cpp
Complement of Base 10 Integer.cpp
 
 
Construct Optimal Rectangle.cpp
Construct Optimal Rectangle.cpp
 
 
Construct the Rectangle.cpp
Construct the Rectangle.cpp
 
 
Container With Most Water.cpp
Container With Most Water.cpp
 
 
Contains Duplicates II.cpp
Contains Duplicates II.cpp
 
 
Contiguous Array.cpp
Contiguous Array.cpp
 
 
Convert Binary Number in a Linked List to Integer.cpp
Convert Binary Number in a Linked List to Integer.cpp
 
 
Copy List with Random Pointer.cpp
Copy List with Random Pointer.cpp
 
 
CostToBuyNcandies.cpp
CostToBuyNcandies.cpp
 
 
Count Common Words With One Occurrence.cpp
Count Common Words With One Occurrence.cpp
 
 
Count Integers With Even Digit Sum.cpp
Count Integers With Even Digit Sum.cpp
 
 
Count Items Matching a Rule.cpp
Count Items Matching a Rule.cpp
 
 
Count Negative Numbers in a Sorted Matrix.cpp
Count Negative Numbers in a Sorted Matrix.cpp
 
 
Count Non-Leaf Nodes in Tree.cpp
Count Non-Leaf Nodes in Tree.cpp
 
 
Count Number of Pairs With Absolute Difference K.cpp
Count Number of Pairs With Absolute Difference K.cpp
 
 
Count Squares.cpp
Count Squares.cpp
 
 
Count distinct elements in every window.cpp
Count distinct elements in every window.cpp
 
 
Count leaf nodes in tree.java
Count leaf nodes in tree.java
 
 
Count primes in given range.cpp
Count primes in given range.cpp
 
 
Counting Bits.cpp
Counting Bits.cpp
 
 
Cousins in Binary Tree.cpp
Cousins in Binary Tree.cpp
 
 
Create From Scratch - LinkedList & Tree.cpp
Create From Scratch - LinkedList & Tree.cpp
 
 
Custom Sort String.cpp
Custom Sort String.cpp
 
 
DFS-Traversal.cpp
DFS-Traversal.cpp
 
 
DP: Shortest Common Supersequence.cpp
DP: Shortest Common Supersequence.cpp
 
 
Decimal To Binary.c
Decimal To Binary.c
 
 
Delete middle of stack.cpp
Delete middle of stack.cpp
 
 
Delete the Middle Node of a Linked List.cpp
Delete the Middle Node of a Linked List.cpp
 
 
DeleteWithoutHeadPointer.cpp
DeleteWithoutHeadPointer.cpp
 
 
Detect cycle in an undirected graph.cpp
Detect cycle in an undirected graph.cpp
 
 
Determine Whether Matrix Can Be Obtained By Rotation.cpp
Determine Whether Matrix Can Be Obtained By Rotation.cpp
 
 
Diagonal Difference - O(n) .cpp
Diagonal Difference - O(n) .cpp
 
 
Diagonal Difference.cpp
Diagonal Difference.cpp
 
 
Diagonal Traversal of Binary Tree.cpp
Diagonal Traversal of Binary Tree.cpp
 
 
Diameter Of Binary Tree .cpp
Diameter Of Binary Tree .cpp
 
 
Diameter Of Binary Tree.cpp
Diameter Of Binary Tree.cpp
 
 
Diameter of Tree - Backtracking.cpp
Diameter of Tree - Backtracking.cpp
 
 
Dijkstra's Algorithm.cpp
Dijkstra's Algorithm.cpp
 
 
Double Linked List Implementation.c
Double Linked List Implementation.c
 
 
Doubling The value.cpp
Doubling The value.cpp
 
 
Edit distance - Memoization.cpp
Edit distance - Memoization.cpp
 
 

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Data Structures And Algorithms For Software Developers

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Table of contents

  • General Info
  • Languages
  • Environment & Tools
  • License

General Info

Solutions to the most commonly asked interview problems for aspiring software developers. Questions are picked from a mix of platforms like Leetcode, Hackerrank, GFG etc.

Languages

The repository contains programs written in:

  • C++
  • C
  • Java

Environment & Tools

  • VS Code
  • Leetcode / Hackerrank / Geeks For Geeks / InterviewBit / Codechef

License

BSD 2-Clause "Simplified" License

Maintainer : Dishan Purkayastha

About

Solutions to the most commonly asked interview problems for aspiring software developers. Questions are hand-picked from a mix of platforms like Leetcode, Hackerrank, GFG etc.

Topics

hashing sorting algorithms leetcode graph hackerrank vectors trees hacktoberfest stacks searching dsa gfg stl-algorithms arrays-and-strings hacktoberfest-accepted hacktoberfest2021

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