Practice Arena

Python Coding Challenges

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925 challenges 556 easy 323 medium 46 hard
Dynamic Programming medium

Kadane Variant: Maximum Product Subarray

Implement max_product_subarray(nums) that returns the maximum product of any contiguous subarray.

kadane subarray product
+30 pts 25m
Dynamic Programming medium

Max Profit from Selling Twice

Compute the maximum profit that can be achieved by completing at most two buy-sell transactions on a given price array.

dynamic programming arrays stock
+28 pts 30m
Dynamic Programming easy

House Robber

Given a list of house values, return the maximum sum you can rob without robbing two adjacent houses.

dynamic-programming arrays optimization
+10 pts 15m
Dynamic Programming medium

House Robber Circular

Solve the House Robber problem with houses arranged in a circle.

dynamic-programming arrays circular
+25 pts 30m
Dynamic Programming easy

Triangle Minimum Path

Compute the minimum path sum from top to bottom of a triangle given as a list of lists.

dynamic-programming bottom-up arrays
+12 pts 20m
Dynamic Programming medium

Paint House Colors

Given a cost matrix, compute the minimum total cost to paint all houses with no two adjacent houses having the same color.

dynamic-programming optimization arrays
+20 pts 25m
Dynamic Programming hard

Create Maximum Number

Given two arrays of digits and an integer k, merge them to form the largest number of length k.

arrays greedy dynamic-programming
+40 pts 35m
Dynamic Programming easy

Shortest Unsorted Continuous Subarray

Given an array of integers, return the length of the shortest contiguous subarray whose sorting makes the whole array sorted.

arrays sorting two-pointers
+10 pts 15m
Dynamic Programming medium

Target sum assignments

Given a list of integers and a target, count how many ways to assign + or - to each number so the total equals the target.

dynamic programming combinatorics arrays
+30 pts 25m
Dynamic Programming hard

Split Array Largest Sum

Minimize the largest sum among k contiguous subarrays using dynamic programming.

dynamic-programming binary-search arrays
+45 pts 40m

Showing 1–10 of 10 challenges · Dynamic Programming

Dynamic Programming — Python coding challenges

What you will find here

This page lists dynamic programming challenges — real Python problems you solve in the browser IDE with instant test feedback. Each challenge includes a clear brief, starter code, and automated checks.

Challenges vs tutorials and quizzes

Challenges test what you can build under constraints. For guided teaching, use our Python tutorials. For quick checks, try quizzes or copy snippets from code samples.