Array-Problems-DSA

This repository contains a curated collection of array-based problems commonly encountered in Data Structures and Algorithms (DSA). Each problem is solved using efficient and optimized C++ solutions, focusing on clarity, readability, and performance. The solutions are designed for learners and practitioners preparing for technical interviews, coding competitions, and academic assessments.

🔍 Key Features:

✅ Well-structured C++ solutions to classic and advanced array problems 🧠 Conceptual explanations and inline comments for deeper understanding 📈 Time and space complexity analysis provided for each solution 🚀 Designed to align with DSA roadmaps used in competitive programming and interview prep

🧩 Topics Covered:

– Array traversal and manipulation – Sorting and searching within arrays – Two-pointer and techniques – Prefix sums and difference arrays – In-place operations and space-optimized solutions – Edge cases validation

Usage:

This repository is ideal for:

– Students practicing arrays as part of their DSA curriculum – Anyone revising array-based interview questions – Contributors looking to improve or add alternate solutions

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Array-Problems-DSA

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🧩 Topics Covered:

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Name		Name	Last commit message	Last commit date
Latest commit History 14 Commits
Addition of Two Matrices.cpp		Addition of Two Matrices.cpp
Diagonal's Sum of Square Matrix.cpp		Diagonal's Sum of Square Matrix.cpp
Find Missing Number ii.cpp		Find Missing Number ii.cpp
Intersection of two sorted arrays.cpp		Intersection of two sorted arrays.cpp
Max among Ten.cpp		Max among Ten.cpp
Max and Min from 2D.cpp		Max and Min from 2D.cpp
Merge Sorted Arrays_ Leetcode_88.cpp		Merge Sorted Arrays_ Leetcode_88.cpp
Monthly Temperature Figures.cpp		Monthly Temperature Figures.cpp
Prime Numbers.cpp		Prime Numbers.cpp
README.md		README.md
Remove Element_ Leetcode.cpp		Remove Element_ Leetcode.cpp
Remove duplicates from an unsorted array.cpp		Remove duplicates from an unsorted array.cpp
Remove duplicates in_place from sorted array.cpp		Remove duplicates in_place from sorted array.cpp
Reverse Integer_ Leetcode_07.cpp		Reverse Integer_ Leetcode_07.cpp
Second largest in array (i).cpp		Second largest in array (i).cpp
Second largest in array (ii).cpp		Second largest in array (ii).cpp
Second smallest in array.cpp		Second smallest in array.cpp
Square,Cube and Sum array indexes.cpp		Square,Cube and Sum array indexes.cpp
Sum of Diagonals_ n x n Matrix_ O(n)_O(1)_Single ForLoop.cpp		Sum of Diagonals_ n x n Matrix_ O(n)_O(1)_Single ForLoop.cpp
Sum of row,column and diagonal of Matrix.cpp		Sum of row,column and diagonal of Matrix.cpp
Target Sum's pair_ Using Two Pointer Approach with index handling.cpp		Target Sum's pair_ Using Two Pointer Approach with index handling.cpp
Third Largest in array.cpp		Third Largest in array.cpp
Total days in Year till input date.cpp		Total days in Year till input date.cpp
Transpose of Matrix.cpp		Transpose of Matrix.cpp
Two Sum ii Leetcode_167.cpp		Two Sum ii Leetcode_167.cpp
Union of Two Sorted Arrays.cpp		Union of Two Sorted Arrays.cpp
Valid String Palindrome_ Leetcode.cpp		Valid String Palindrome_ Leetcode.cpp
Value greater than average of array.cpp		Value greater than average of array.cpp
chech if array is sorted_ Bubble Sort.cpp		chech if array is sorted_ Bubble Sort.cpp
count prime numbers.cpp		count prime numbers.cpp
insertion in 2D array.cpp		insertion in 2D array.cpp
is power of three_ Leetcode_326.cpp		is power of three_ Leetcode_326.cpp
largest element in array.cpp		largest element in array.cpp
left rotate an array by K places_Optimal.cpp		left rotate an array by K places_Optimal.cpp
left rotate an array by one place.cpp		left rotate an array by one place.cpp
left rotete an array by k places_ BruteForce.cpp		left rotete an array by k places_ BruteForce.cpp
move zeros to end.cpp		move zeros to end.cpp
move zeros to end_Better Solution.cpp		move zeros to end_Better Solution.cpp
move zeros to end_Optimal Solution.cpp		move zeros to end_Optimal Solution.cpp
remove duplicate from sorted array_ii.cpp		remove duplicate from sorted array_ii.cpp
right rotate an array by K-Places_ BruteForce.cpp		right rotate an array by K-Places_ BruteForce.cpp
right rotate an array by K-Places_Optimal.cpp		right rotate an array by K-Places_Optimal.cpp
search insert position_ Leetcode.cpp		search insert position_ Leetcode.cpp
search insert_ ii_ Leetcode.cpp		search insert_ ii_ Leetcode.cpp
squares of sorted array_ Leetcode.cpp		squares of sorted array_ Leetcode.cpp

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Array-Problems-DSA

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🧩 Topics Covered:

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