Claude
b9aeb78b24
Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_017ic4b6nxynun5JFivebVb1
18 lines
730 B
Plaintext
18 lines
730 B
Plaintext
Reverse Polish Notation: stack after every token
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tokens: [2, 1, +, 3, *] result = 9
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token 2: push 2 stack(top first) = [2]
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token 1: push 1 stack(top first) = [1, 2]
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token +: pop 1 then 2, compute 2 + 1 = 3 stack(top first) = [3]
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token 3: push 3 stack(top first) = [3, 3]
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token *: pop 3 then 3, compute 3 * 3 = 9 stack(top first) = [9]
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tokens: [4, 13, 5, /, +] result = 6
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token 4: push 4 stack(top first) = [4]
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token 13: push 13 stack(top first) = [13, 4]
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token 5: push 5 stack(top first) = [5, 13, 4]
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token /: pop 5 then 13, compute 13 / 5 = 2 stack(top first) = [2, 4]
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token +: pop 2 then 4, compute 4 + 2 = 6 stack(top first) = [6]
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