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The difference between Algorithms & Flowcharts are that algorithms are the rules and sequences that makes one understand things whereas flowcharts depict diagrammatic representation of the same. The algorithms and flowcharts are interdependent in computer programming.
| Table of Content |
Key terms: Algorithm, Flowcharts, Advantages and Disadvantages of Algorithm and Flowchart
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Algorithm
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Algorithms serve as a systematic overview of the process for creating various programs, with a specific focus on computer programming, presented in a sequential fashion.
Advantages of Algorithm
These are the following advantages of algorithm:
- These are easy to write.
- These are used by human-readable techniques to understand logic.
- If there are big problems, algorithms should be written with moderate steps.
Disadvantages of Algorithm
These are following disadvantages of algorithm:
- These are difficult to debug.
- These are hard to show the branches and loops.
- Jumping (or goto statements) makes the algorithm hard to trace the problems.
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Flowchart
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Flowchart is a graphical representation that illustrates the steps of a program, where we use several geometric patterns.
Advantages of Flow chart
There are following advantages of algorithm:
- These are easy to debug.
- These have effective analysis and coding.
- These have efficient program maintenance.
Disadvantages of Flow chart
There are following disadvantages of algorithm:
- These are time consuming and require effort.
- It is difficult to modify.
- There are no particular standards.
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Difference Between Algorithm and Flowchart
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The difference between Algorithm & Flowchart is mentioned below:
| Algorithm | Flowchart |
|---|---|
| It is a set of instructions that are used to solve a well-defined computational problem. | It is a graphical representation that illustrates the steps of a program, where we use several geometric patterns. |
| It is a bit difficult to create compared to flowchart and challenging to understand for a layman. | It is easy and user friendly. |
| There are no geometrical shapes, symbols, or patterns. | It utilizes different types of geometrical shapes, symbols, and patterns. |
| It uses the domain of mathematics and computer science. | It uses different disciplines to describe a process. |
| It is used to represent the concept of decidability. | It is used in documenting, designing, and analysing a program in different disciplines. |
| It demands the knowledge of a computer programming language. | It doesn’t demand the knowledge of a computer programming language. |
| It is difficult to debug the errors in algorithms. | If one wants to debug the errors in flowcharts it is easy. |
| There are predefined rules used. | There are no rules used in flowcharts. |
| Hard to display and looping. | These are simple to display and looping. |
| These are represented in non-computer languages. | These are represented in graphical format. |
Solved Examples
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Few examples are illustrated below:
Example 1: Write an algorithm to print the numbers from 1 to 20.
Solution: Algorithm:
Step 1: Initialize a variable 'x' as 0,
Step 2: Increment the variable 'x' by 1,
Step 3: Print the variable 'x'
Step 4: If 'x' is less than 20, then go back to step 2. Otherwise, go to the next step.
Step 5: Exit.
Example 2: Design a flowchart to calculate the area of a circle?
Solution:
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Things to Remember
- Flowchart is a graphical representation that illustrates the steps of a program, where we use several geometric patterns.
- Algorithm is a step-by-step summary of the procedure to execute, for designing different programs, particularly in computer programming.
- The flow charts utilise different types of geometrical shapes, symbols, and patterns whereas they use the domain of mathematics and computer science.
- Algorithms are represented in non-computer languages whereas flowcharts are represented in graphical format
- Algorithms are used to represent the concept of decidability.
- It is difficult to debug the errors in algorithms
- Flowcharts are used in documenting, designing, and analysing a program in different disciplines
Sample Questions
Ques: What is a flow chart? (1 mark)
Ans: It is a graphical representation that illustrates the steps of a program, where we use several geometric patterns.
Ques: What is an algorithm? (1 mark)
Ans: It is a step-by-step summary of the procedure to execute, for designing different programs, particularly in computer programming.
Ques: Why do we need a flowchart? (2 marks)
Ans: There is a need for a flow chart as it provides a helpful communication tool for developers. It may just visualise all the problematic academic concepts for once colleagues rather than describe them. The project will be understood by all parties concerned. As a result, one may successfully compel collaboration to produce the final program.
Ques: Write an algorithm to find out that the year entered is a leap year or not (3 marks)
Ans: Algorithm:
Step 1: Enter the year ‘x’ to find out if it is a leap year or not.
Step 2: Initialize a variable 'x' as 1000 to 9999.
Step 3: Divide the variable 'x' by 4,
Step 4: If 'x' is equal == 0, then print the variable 'x’, Otherwise go back to step 1.
Step 5: Exit.
Ques: What are the characteristics of an algorithm? (5 marks)
Ans: There are following characteristics of an algorithm:
- Understanding the core idea behind the issue
- To understand the course of the issue
- It gives the designer a clear explanation of the requirements and goal of the issue.
- Find a remedy for the problem
- Boost the efficiency of current techniques
- It contrasts the algorithm's efficiency with that of other methods.
- It is the most straightforward approach to explaining anything without getting into too much technical information about its operation.
- to evaluate the methods' effectiveness under all conditions (best cases, worst cases, and average cases)
- To calculate the resource needs of the algorithm (memory, input-output cycles).
Ques: What are the different shapes and symbols used in a Flow chart? (2 marks)
Ans: These are the following shapes and symbols used in a flow chart:
A parallelogram in the flowchart may be used to indicate input and output, a rectangular box indicates a mathematical operation, a diamond symbol indicates the decision-making statements, and several other symbols are used in flowcharts.
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