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- 43. Multiply Strings
- Class
- Substring with Concatenation of All Words
- Python Code
- 30. Substring with Concatenation of All Words
- shiba
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- Convert Sorted List to Binary Search Tree
- Python
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- 109. Convert Sorted List to Binary Search Tree
- Python Implementation
- 315. Count of Smaller Numbers After Self
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- kaggle
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목록deterministic finite automation (1)
Scribbling
LeetCode: 65. Valid Number
First solution is using regular expression. Below is some useful patterns. Integer: ^[+-]?\d+$ Flaot: ^[+-]?((\d+(\.\d*)?)|(\.\d+))$ Sicnetific notation: ^[+-]?((\d+(\.\d*)?)|(\.\d+))[eE][+-]?\d+$ class Solution: def isNumber(self, s: str) -> bool: import re pat = re.compile('(^[+-]?((\d+(\.\d*)?)|(\.\d+))$)|(^[+-]?((\d+(\.\d*)?)|(\.\d+))[eE][+-]?\d+$)') return re.match(pat, s) Second solution i..
Computer Science/Coding Test
2022. 1. 20. 14:20