Java I want to learn java printf formatter.

[shivajikobardan]

Can you give me best resources for it along with exercises to practice(step by step level instead of scattered exercises).

 

[EkBass]

Not sure if best, but seems pretty good: Formatting Output with printf() in Java | Baeldung

 

[simong1993]

Hey! Great question. If you're looking for structured resources and exercises for competitive programming, there are some fantastic options that guide you step by step, instead of throwing random problems at you.

1. Competitive Programming Platforms:

• Codeforces (Codeforces): One of the most popular platforms for competitive programming. They offer regular contests and you can filter problems by difficulty to progress step by step.
• AtCoder (AtCoder): Another great platform with well-organized contests. Start with the Beginner Contests, and they gradually ramp up in difficulty.
• LeetCode (https://leetcode.com/): Focuses more on interview prep, but also great for practicing algorithms and data structures. You can follow the "Explore" section, which has a more structured approach.

2. Step-by-Step Learning Resources:

• CP-Algorithms (Main Page - Algorithms for Competitive Programming): This is like a competitive programming bible. It covers algorithms and data structures in depth with great explanations, and you can follow it topic by topic.
• A2OJ Ladders (https://a2oj.com/): These are curated ladders of problems from Codeforces, designed to help you improve progressively. Each ladder is a set of problems sorted by difficulty.

3. Courses and Tutorials:

• CSES Problem Set (https://cses.fi/problemset/): Offers a structured collection of competitive programming exercises. Start with the "Introductory Problems" and work your way up.
• Introduction to Algorithms by MIT (Introduction to Algorithms | Electrical Engineering and Computer Science | MIT OpenCourseWare): If you're more of a video learner, this free course by MIT is a great foundation for algorithms and competitive programming.

4. Practice:

• Exercism.io (Exercism): A coding practice platform where you can learn by solving exercises, and it gives feedback on your solutions.
• HackerRank Algorithms (https://www.hackerrank.com/domains/tutorials/10-days-of-algorithms): Start with the "10 Days of Algorithms" challenge to get a structured and progressive learning experience.

Exercises to Practice:
Start with easy problems on LeetCode or Codeforces to build your basic understanding, then move on to specific categories like "greedy algorithms" or "dynamic programming" and do progressively harder problems.

1. Easy:
- Implement basic data structures (stacks, queues, linked lists).
- Solve problems like Two Sum, Merge Sorted Arrays, etc.

2. Medium:
- Practice on binary search, sorting algorithms, and basic dynamic programming problems.
- Try problems like Longest Common Subsequence, Coin Change Problem.

3. Hard:
- Focus on advanced topics like graph algorithms, segment trees, and advanced dynamic programming.
- Problems like Shortest Paths, Minimum Spanning Tree, or Knapsack problem are good challenges.

By progressing step by step with the right resources, you'll get much better at competitive programming. Hope this helps, and good luck!