The word Algorithm means “a process or set of rules to be followed in calculations or other problem-solving operations”. Therefore Algorithm refers to a set of rules/instructions that step-by-step define how a work is to be executed upon inorder to get the expected results.
Let’s take a look at an example for a better understanding. As a programmer, we are all aware of the Linear Search program. (Linear Search)
Algorithm of linear search :
1. Start from the leftmost element of arr and one by one compare x with each element of arr. 2. If x matches with an element, return the index. 3. If x doesn’t match with any of elements, return -1.
Here, we can see how the steps of a linear search program are explained in a simple, English language.
A flowchart is a graphical representation of an algorithm. Programmers often use it as a program-planning tool to solve a problem. It makes use of symbols which are connected among them to indicate the flow of information and processing.
The process of drawing a flowchart for an algorithm is known as “flowcharting”.
Example: Draw a flowchart to input two numbers from the user and display the largest of two numbers
Let’s see the difference between algorithm and flow chart:-
|1.||Algorithm is step by step procedure to solve the problem.||Flowchart is a diagram created by different shapes to show the flow of data.|
|2.||Algorithm is complex to understand.||Flowchart is easy to understand.|
|3.||In algorithm plain text are used.||In flowchart, symbols/shapes are used.|
|4.||Algorithm is easy to debug.||Flowchart it is hard to debug.|
|5.||Algorithm is difficult to construct.||Flowchart is simple to construct.|
|6.||Algorithm does not follow any rules.||Flowchart follows rules to be constructed.|
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