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Here's the updated description:
Welcome to our Data Structures Complete Course! Throughout this course, we're committed to delivering comprehensive knowledge to you. If you find our videos helpful, please subscribe to our channel and also share them with your friends and colleagues.
In this lecture, we delve into the conversion of infix expressions to postfix expressions using the stack data structure. By scanning the infix expression from left to right, we handle operands straightforwardly by adding them to the postfix form. For operators and parentheses, we manage them in the stack while maintaining their precedence.
In a postfix expression:
An operator is written after its operands.
For example, the infix expression 2+3 translates to 23+ in postfix notation.
Operations are performed in the order they are written (left to right).
No parentheses are necessary.
For instance, the infix expression 2+3*4 translates to 234*+ in postfix notation.
Similarly, the infix expression 3*(4+2)*5 translates to 342+*5*.
Algorithm:
While characters remain in the postfix string:
1. Read a character.
2. If the character is a digit, convert it to an integer and push it.
3. If the character is an operator:
Pop the stack twice, obtaining the two operands.
Perform the operation.
Push the result.
Pop the final value from the stack.
For further reference and examples, you can download the PowerPoint presentation from the following link: [Data Structures PowerPoint Presentation](https://docs.google.com/presentation/...)
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