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Intro to Pseudocode and Algorithms | Problem Solving in Computer Science
The document introduces algorithms and pseudocode. An algorithm is defined as a set of rules that must be followed to solve a particular problem. Pseudocode is a written outline of code steps that can be translated into a programming language. Pseudocode is useful to describe how an algorithm should work, explain a computing process simply, and design code collaboratively. Examples of pseudocode are provided to check if a number is even or odd by using the modulo operator and looping through each number.
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Intro to Pseudocode and Algorithms | Problem Solving in Computer Science
- 1. Intro to Algorithms & Pseudocode Co a c h F r u L o u i s Tech|Career|Inspiration Programming Basics
- 2. 2 Agenda @Coachfrulouis Tech|Career|Inspiration 02. What ispseudocode? ( With examples) 01. What is an Algorithm?(With examples) 03. Why is Pseudocode Useful? 04. Possibilities… Agenda
- 3. 3 Alien: Write aprogram that allows users to check whether a number is even or odd. You: Huhhhh?
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- 5. 5 Problem Solving in theComputer world Algorithms PseudoCODE
- 6. 6 ALGORITHM: A set ofrules that must be followed when solving a particular problem. You: Huhhhh? Input Set of Rules Output
- 7. 7Party Response Algorithm! You:Huhhhh?Definitely Going Any Girls Won’t Go Party Invitation Will Amy Go? Won’t Go Do I have a ride? Won’t Go A set of rules to solve problems. Usually Deterministic No No No Yes Yes Yes
- 8. 8 $Examples 3 Mod 2= 1 4 Mod 2 = 0 5 Mod 2 = 1 6 Mod 2 = 0 7 Mod 2 = 1 Alien: Write a program that allows users to check whether a number is even or odd. You: Huhhhh? ODD EVEN ODD EVEN ODD
- 9. 9 PSEUDOCODE: Pseudocode is step-by-stepwritten outline of your code that you can gradually transcribe into the programming language. You: Huhhhh?
- 10. 10 FOR EACH currentNumber (X) in the list we see X mod 2 = Y Check IF Y == 0 THEN it’s EVEN $Algorithm: A set of rules that must be followed when solving a particular problem. LOOP through each number in the list Get LIST of numbers ELSE Check IF Y == 1 then it’s ODD $Pseudocode END the program
- 11. 11 PSEUDOCODE IS USEFUL: 1.To describe algorithm should work 2. To explain a computing process to less-technical users 3. To design code in a group setting. You: Huhhhh?
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- 13. 13Key Programming Concepts You:Huhhhh? • Loops • Conditionals • Iterations • And more… Deterministic vs Non-deterministic Algorithm. Many Types of Algorithms • Simple recursive algorithms • Backtracking algorithms • Divide and conquer algorithms • Dynamic programming algorithms • Greedy algorithms • Branch and bound algorithms • Brute force algorithms • Randomized algorithms
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