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shuntingyard's Introduction

a python implementation of the shunting yard algorithm for boolean expressions

author: erik garrison <[email protected]>

shuntingyard's People

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Peter Clarke avatar avatar wuxx avatar avatar avatar Brett avatar Bharath Krishnan avatar Robbie Ostrow avatar Derek Henscheid avatar avatar Per Olofsson avatar Yuepeng Guo avatar Wesley Kerfoot avatar evandrix avatar avatar Nektra Advanced Computing / Data Big Bang / CoinFabrik avatar Vedant Kumar avatar Miguel Vaz avatar

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vedantk tyomi111 abock canamcy osman51 sarvex sigmashek clarkthan

shuntingyard's Issues

Doesn't work

Try this and you will see:

assert infix_to_prefix("a+b") == "ab+"
assert infix_to_prefix("(a+(b*c))") == "abc*+"
assert infix_to_prefix("((a+b)*(z+x))") == "ab+zx+*"
assert infix_to_prefix("((a+t)*((b+(a+c))^(c+d)))") == "at+bac++cd+^*"
assert infix_to_prefix("c+d*b/(a-e)^b^c") == "cdb*ae-bc^^/+"

First of all parsing is not problem free. Once you get passed it, the algorithm itself is flawed.

Your work is referenced from Wikipedia, you better fix it up :)

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