Leetcode 150 - Evaluate Reverse Polish Notation

Leetcode 150 - Evaluate Reverse Polish Notation

[GregHogg]

Learn data structures and algorithms for free at algomap.io :)

[adityaanuragi]

Reverse polish is quite the mouthful

I've always called it postfix expressions or just postfix

[Cipheri]

We covered this in my intro to data structures class as an application of the stack. Glad to see it has applications in the real world too!

[TheAMparty]

This method wouldn't actually work for subtraction, since your stack method reverses the order of those numbers and subtraction (and division too for that matter) isn't commutative

[Bacon.]

Man i wish their was a built in operation class in python

[hello_there]

You can do *"int(a//b)"*, instead of *"a/b"* with int and ceil

[RIPNANI]

Reverse polish = postfix valuation


















Some one comment so that I won't forget about it

[joshuaokhiria]

How long do you think it will take for one to master data structures and algorithms

[Jandoesrun]

What if there are three numbers though?

like [1, 2, 3, +] The code wouldn't work anymore

[edudictivecoder]

Reverse polish notation means -> postfix