gewashington / AC-DSA

Data Structures and Algorithms Curriculum

AC-DSA

Data Structures and Algorithms Interview Problems

Problems

• Array Problems
• Integer Problems
• Linked List Problems
• Stack Problems
• String Problems

Array Problems

Problem	Difficulty	Tags	Solution
Diagonal Sum	Easy	[Arrays, Matrices, Integers]	Link
Find Repeats	Easy	[Arrays, Integers, Duplicates]	Link
Sum of first five even numbers	Easy	[Arrays, Integers]	Link
Greatest Row or Column in Matrix	Easy	[Arrays, Matrices, Integers]	Link
Largest Product of Two	Easy	[Arrays, Products]	Link
Matrix Sum Without Corners	Easy	[Arrays, Matrices, Integers]	Link
Pair Sum	Easy	[Arrays, Integers]	Link
Product of All Except Index	Easy	[Arrays, Products]	Link
Remove Duplicates	Easy	[Arrays, Duplicates]	Link
Second Largest	Easy	[Arrays, Integers]	Link
Merge Sorted Arrays	Medium	[Arrays]	Link
Shift Zeros	Medium	[Arrays, Duplicates]	Link
Product of Three	Medium	[Arrays, Products, Integers]	Link
Keypad	Hard	[Arrays]	Link

Integer Problems

Problem	Difficulty	Tags	Solution
Avoid Fives	Easy	[Integers]	Link
Add Digits	Medium	[Integers]	Link
Backwards Primes	Medium	[Integers, Primes]	Link
Happy Numbers	Medium	[Integers, Primes]	Link

Linked List Problems

Problem	Difficulty	Tags	Solution
Swap Nodes	Medium	[Linked Lists]	Link

Stack Problems

Problem	Difficulty	Tags	Solution
Largest Element	Easy	[Stacks]	Link
Valid Parentheses	Medium	[Strings, Stacks]	Link

String Problems

Problem	Difficulty	Tags	Solution
Palindrome	Easy	[Strings]	Link
Pangram	Easy	[Strings]	Link
Remove Vowels	Easy	[Strings]	Link
Reverse String	Easy	[Strings]	Link
Pattern Match	Easy	[Arrays, Strings, Dictionaries]	Link
Sequence Count in String	Medium	[Arrays, Integers]	Link