Ramp Coding Interview Questions
26 Ramp coding interview problems with full optimal solutions — 12 easy, 11 medium, 3 hard. Every problem ships with multiple approaches (brute-force first, then the optimal), complexity tables for each, company-specific tips on what an Ramp interviewer values, and a FAQ section.
Showing 12 problems of 26
- #1easyfoundational
1. Two Sum
Given an array of integers and a target, return indices of two numbers that add to the target.
- #2easyfoundational
2. Valid Parentheses
Determine if a string of brackets is valid (every open has a matching close in the right order).
- #3easyfoundational
3. Merge Two Sorted Lists
Merge two sorted linked lists into one sorted list by splicing nodes together.
- #4easyfoundational
4. Remove Duplicates from Sorted Array
In-place dedupe a sorted array; return the new length.
- #5easyfoundational
5. Remove Element
In-place remove all occurrences of a value from an array; return the new length.
- #6easyfoundational
6. Search Insert Position
Given a sorted array and a target, return the index it would be inserted at to keep order.
- #7easyfoundational
7. Plus One
Increment a number represented as a digit array by one.
- #8easyfoundational
8. Merge Sorted Array
Merge two sorted integer arrays in-place into the first.
- #9easyfoundational
9. Best Time to Buy and Sell Stock
Maximize profit from a single buy and a single sell across a price series.
- #10easyfoundational
10. Single Number
Find the one element that appears exactly once when every other element appears twice.
- #11easyfoundational
11. Linked List Cycle
Detect whether a singly linked list contains a cycle.
- #12easyfoundational
12. Contains Duplicate
Determine whether any value appears at least twice in an array.