Sharpen Your DSA Problem Solving Skills

Table of Contents

• Basic Problems
• Pattern Problems
• Complexity
• Mathematics
• Bits-Manipulation
• Recursion
• Arrays
• Searching
• Sorting
• Matrix
• Hashing
• String
• OOPS-in-Java
• Linked List
• Stack
• Queue
• Deque
• Tree
• Binary Search Tree
• Heap
• Graph
• Greedy
• Backtracking
• Dynamic Programming
• Trie
• Segment-Trees
• Disjoint-Set

Basic Problems

S.No	Problem	Theory	Source Code
1	Leap Year	Article	Solution
2	Sum Of AP	Article	Solution
3	Product Sum	Article	Solution
4	Sum of first n terms	Article	Solution
5	Palindrome	Article	Solution
6	Strong Numbers	Article	Solution
7	GCD of two numbers	Article	Solution
8	Prime Number	Article	Solution
9	Area of a triangle	Article	Solution
10	Reverse a String	Article	Solution
11	Replace all 0's with 5	Article	Solution
12	Find N-th term in the series	Article	Solution
13	Middle of Three	Article	Solution
14	Smallest K digit number divisible by X	Article	Solution
15	Check perfect square	Article	Solution
16	Check an Integer is power of 3 or not	Article	Solution
17	Krishnamurthy number	Article	Solution
18	Factors Sum	Article	Solution
19	Remove consonants from a string	Article	Solution
20	Factorial Number	Article	Solution

Pattern Problems

S.No	Problem	Theory	Source Code
1	Pattern 1	Article	Solution
2	Pattern 2	Article	Solution
3	Pattern 3	Article	Solution
4	Pattern 4	Article	Solution
5	Pattern 5	Article	Solution
6	Pattern 6	Article	Solution
7	Pattern 7	Article	Solution
8	Pattern 8	Article	Solution
9	Pattern 9	Article	Solution
10	Pattern 10	Article	Solution
11	Pattern 11	Article	Solution
12	Pattern 12	Article	Solution
13	Pattern 13	Article	Solution
14	Pattern 14	Article	Solution
15	Pattern 15	Article	Solution
16	Pattern 16	Article	Solution
17	Pattern 17	Article	Solution
18	Pattern 18	Article	Solution
19	Pattern 19	Article	Solution
20	Pattern 20	Article	Solution
21	Pattern 21	Article	Solution
22	Pattern 22	Article	Solution

Complexity

S.No	Problem	Theory	Source Code
1

Mathematics

S.No	Problem	Theory	Source Code
1	Count Digits	Article	Solution
2	Factorial	Article	Solution
3	Count digits in a factorial	Article	Solution
4	LCM And GCD	Article	Solution
5	Find Prime numbers in a range	Article	Solution
6	Prime Factors	Article	Solution
7	Sieve of Eratosthenes	Article	Solution
8	Prime Factorization using Sieve.	Article	Solution
9	All divisors of a Number	Article	Solution
10	Series GP	Article	Solution
11	Modular Multiplicative Inverse	Article	Solution
12	Power Of Numbers	Article	Solution

Bits Manipulation

S.No	Problem	Theory	Source Code
1	Check whether K-th bit is set or not	Article	Solution
2	Find first set bit	Article	Solution
3	Count total set bits	Article	Solution
4	Power of 2	Article	Solution
5	Rightmost different bit	Article	Solution
6	Bit Difference	Article	Solution
7	Swap all odd and even bits	Article	Solution
8	Palindrome numbers	Article	Solution
9	Longest Consecutive 1's	Article	Solution
10	Maximum AND Value	Article	Solution
11	Number is sparse or not	Article	Solution
12	Gray to Binary and Binary to Gray	Article	Solution
13	Gray to Binary equivalent	Article	Solution

Recursion

S.No	Problem	Theory	Source Code
1	Print N to 1 without loop	Solution	Solution
2	Print 1 to n without using loops	Solution	Solution
3	Factorial	Solution	Solution

Arrays

S.No	Problem	Theory	Source Code
1

Searching

S.No	Problem	Theory	Source Code
1

Sorting

S.No	Problem	Theory	Source Code
1

Matrix

S.No	Problem	Theory	Source Code
1

Hashing

S.No	Problem	Theory	Source Code
1

📘  License

The Whole content management system is released under the under terms of the MIT License.