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[pre-commit.ci] auto fixes from pre-commit.com hooks
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@ -6,32 +6,50 @@ Input: s = -90E3
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Output: True
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Leetcode link: https://leetcode.com/problems/valid-number/description/
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"""
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from enum import Enum
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from typing import Dict
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class CharType(Enum):
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NUMERIC = 'NUMERIC'
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SIGN = 'SIGN'
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EXPONENT = 'EXPONENT'
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DECIMAL = 'DECIMAL'
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NUMERIC = "NUMERIC"
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SIGN = "SIGN"
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EXPONENT = "EXPONENT"
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DECIMAL = "DECIMAL"
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class State(Enum):
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INITIAL = 'INITIAL'
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SIGNED = 'SIGNED'
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WHOLE = 'WHOLE'
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FRACTIONAL = 'FRACTIONAL'
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FRACTION = 'FRACTION'
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EXPONENTIAL = 'EXPONENTIAL'
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EXP_SIGN = 'EXP_SIGN'
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EXP_NUMBER = 'EXP_NUMBER'
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INITIAL = "INITIAL"
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SIGNED = "SIGNED"
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WHOLE = "WHOLE"
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FRACTIONAL = "FRACTIONAL"
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FRACTION = "FRACTION"
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EXPONENTIAL = "EXPONENTIAL"
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EXP_SIGN = "EXP_SIGN"
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EXP_NUMBER = "EXP_NUMBER"
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state_machine : Dict[State, Dict[CharType, State]] = {
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State.INITIAL: {CharType.NUMERIC: State.WHOLE, CharType.SIGN: State.SIGNED, CharType.DECIMAL: State.FRACTIONAL},
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state_machine: Dict[State, Dict[CharType, State]] = {
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State.INITIAL: {
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CharType.NUMERIC: State.WHOLE,
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CharType.SIGN: State.SIGNED,
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CharType.DECIMAL: State.FRACTIONAL,
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},
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State.SIGNED: {CharType.NUMERIC: State.WHOLE, CharType.DECIMAL: State.FRACTIONAL},
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State.WHOLE: {CharType.NUMERIC: State.WHOLE, CharType.DECIMAL: State.FRACTION, CharType.EXPONENT: State.EXPONENTIAL},
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State.WHOLE: {
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CharType.NUMERIC: State.WHOLE,
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CharType.DECIMAL: State.FRACTION,
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CharType.EXPONENT: State.EXPONENTIAL,
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},
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State.FRACTIONAL: {CharType.NUMERIC: State.FRACTION},
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State.FRACTION: {CharType.NUMERIC: State.FRACTION, CharType.EXPONENT: State.EXPONENTIAL},
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State.EXPONENTIAL: {CharType.NUMERIC: State.EXP_NUMBER, CharType.SIGN: State.EXP_SIGN},
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State.FRACTION: {
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CharType.NUMERIC: State.FRACTION,
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CharType.EXPONENT: State.EXPONENTIAL,
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},
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State.EXPONENTIAL: {
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CharType.NUMERIC: State.EXP_NUMBER,
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CharType.SIGN: State.EXP_SIGN,
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},
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State.EXP_SIGN: {CharType.NUMERIC: State.EXP_NUMBER},
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State.EXP_NUMBER: {CharType.NUMERIC: State.EXP_NUMBER},
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}
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@ -154,6 +172,12 @@ def classify_char(char: str) -> CharType | None:
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>>> classify_char('e')
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<CharType.EXPONENT: 'EXPONENT'>
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>>> classify_char('.')
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<CharType.DECIMAL: 'DECIMAL'>
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>>> classify_char('')
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>>> classify_char('0')
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<CharType.NUMERIC: 'NUMERIC'>
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>>> classify_char('01')
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'decimal'
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>>> classify_char('r')
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