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题解 | softmax激活函数实现

import numpy as np import math def softmax(scores: list[float]) -> list[float]: e_sum = 0 probabilities = list(scores) for i in range...

2025-04-14

0 69

题解 | Sigmoid 激活函数实现

import math def sigmoid(z: float) -> float: result = 1/(1+math.exp(-1*z)) return round(result, 4) if __name__ == "__main__": ...

2025-04-14

0 194

题解 | 点击消除

import sys for line in sys.stdin: a = line.split() res = [] for i in a[0]: if res and res[-1] == i: res.pop() ...

2025-03-31

0 49

题解 | 逆波兰表达式求值

class Solution: def evalRPN(self , tokens: List[str]) -> int: nums = [] compute_dic = ['+', '-', '*', '/'] for i in tok...

2025-03-31

0 64

题解 | 有效括号序列

class Solution: def isValid(self , s: str) -> bool: ori_len = len(s) if ori_len == 0: return True elif ori_...

2025-03-31

0 60

题解 | 栈的压入、弹出序列

class Solution: def IsPopOrder(self , pushV: List[int], popV: List[int]) -> bool: stack = [] for i in pushV: stack....

2025-03-31

0 39