Citadel Interview Guide

Showing 3 of 104 questions

Ranking

A question's ranking corresponds to how commonly it's asked by Citadel. The higher the ranking, the more likely you'll encounter it in a Citadel interview.

Question

Frequency

Difficulty

Longest Non-decreasing Subarray From Two Arrays

You're given two arrays. Construct the longest possible non-decreasing subarray by picking elements from either array at each index.

ArraysDynamic Programming

Very likely

If you have a Citadel interview, it's very likely that you will get this question

Medium

#1. Longest Non-decreasing Subarray From Two Arrays

Medium

You're given two arrays. Construct the longest possible non-decreasing subarray by picking elements from either array at each index.

ArraysDynamic Programming

This question is very likely to be asked in your Citadel interview

Minimum Knight Moves

Find the minimum number of moves a knight needs to reach a target position on an infinite chessboard, starting from (0, 0).

Graphs

Very likely

If you have a Citadel interview, it's very likely that you will get this question

Medium

#2. Minimum Knight Moves

Medium

Find the minimum number of moves a knight needs to reach a target position on an infinite chessboard, starting from (0, 0).

Graphs

This question is very likely to be asked in your Citadel interview

Binary Tree Maximum Path Sum

Find the maximum sum of any path in a binary tree, where a path can start and end at any node. The path must contain at least one node.

TreesRecursion

Very likely

If you have a Citadel interview, it's very likely that you will get this question

Hard

#3. Binary Tree Maximum Path Sum

Hard

Find the maximum sum of any path in a binary tree, where a path can start and end at any node. The path must contain at least one node.

TreesRecursion

This question is very likely to be asked in your Citadel interview

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