
What are some beginner level dynamic programming problems that one can try practicing on CodeChef and other online judges?
To get started with dynamic programming (DP) and practice beginner-level problems, here are some suggestions from various resources:
Simple DP Problems
Coin Change and Subset Sum
- Coin Change - Count Ways to Make Sum: Given an integer array of coins and a sum, count all combinations of coins to make the given value sum4.
- Subset Sum Problem: Check if there is a subset of the given array whose sum is equal to the given sum4.
Basic DP Problems on CodeChef
- House Robber: Determine the maximum amount of money you can rob from a series of houses without robbing two adjacent houses1.
- Min Cost Path: Find the minimum cost path from the top-left to the bottom-right of a matrix1.
- Decode Ways: Given a string of digits, determine how many ways it can be decoded into letters1.
- Climbing Stairs: Calculate the number of ways to climb a staircase with a given number of steps, either 1 or 2 steps at a time1.
Other Beginner-Friendly Problems
- Fibonacci Numbers: Calculate the nth Fibonacci number using DP14.
- Longest Common Subsequence: Find the longest common subsequence between two strings14.
- Edit Distance: Calculate the minimum number of operations to transform one string into another14.
- Rod Cutting: Determine the maximum value obtainable by cutting up a rod and selling the pieces4.
Problems on Codeforces and CodeChef
Codeforces
- New Year and the Permutation Concatenation: A simple DP problem involving permutations and concatenation3.
- Consecutive Subsequence: Find the longest subsequence that consists of consecutive integers3.
CodeChef
- Practice Problems: CodeChef offers a set of 21 practice problems on dynamic programming, covering various aspects such as climbing stairs, min cost path, and more5.
Additional Resources
- CodeChef's Dynamic Programming Section: This section includes a variety of problems categorized by difficulty level, making it easier for beginners to start practicing5.
- GeeksforGeeks DP Problems: This resource lists several beginner-level DP problems, including detailed explanations and examples14.
By starting with these problems, you can develop a solid understanding of dynamic programming and gradually move on to more complex problems.