复制 class Vector2D: def __init__(self, x, y): self.x = x self.y = y def __repr__(self): return f"Vector2D(x={self.x}, y={self.y})" def __mul__(self, other): # Scalar multiplication if isinstance(other, (int, float)): return Vector2D(self.x * other, self.y * ...
This function takes a number as input and returns its square using multiplication (num * num). Example: Python 1 2 3 4 5 6 7 # Function to return the square of a number def square(num): return num * num print(square(4)) Output: Explanation: Here, the * operator is defined by...
Python 2.x 中遍历键值 for key, value in d.iteritems(): Python 3.x 中遍历键值 for key, value in d.items(): 其他序列类型集合 Same as {"a", "b","c"} normal_set = set(["a", "b","c"]) Adding an element to normal set is fine normal_set.add("d") print("Normal Set") ...
Multiplication -- recursive solution recursive step: think how to reduce problem to a simpler / smaller version of same problem:a*b = a+a+a+...+a (b times) = a+(a+a+...+a) (b-1 times) = a+ a*(b-1)---recursive reduction base case: keep reducing problem until reach a sim...
generalized star expression handling, including double stars; this fixes multiplication making expressions "unsafe" for trailing commas (#132) Black no longer enforces putting empty lines behind control flow statements (#90) Black now splits imports like "Mode 3 + trailing comma" of isort (#127...
generalized star expression handling, including double stars; this fixes multiplication making expressions "unsafe" for trailing commas (#132) Black no longer enforces putting empty lines behind control flow statements (#90) Black now splits imports like "Mode 3 + trailing comma" of isort (#127...
Scalar multiplication:: >>> v * 3 Vector(9, 12) >>> abs(v * 3) 15.0 """importmathclassVector:def__init__(self, x=0, y=0): self.x = x self.y = ydef__repr__(self):returnf'Vector({self.x!r},{self.y!r})'def__abs__(self):returnmath.hypot(self.x, self.y)def__...
This function uses simple school # mathematics for multiplication. This function # may value of res_size and returns the new value # of res_size def multiply(x, res,res_size) : carry = 0 # Initialize carry # One by one multiply n with individual # digits of res[] i = 0 while i ...
scaled_ingredients = {k: v * scale_factor for k, v in ingredients.items()} print(scaled_ingredients) # Output: {'flour': 500.0, 'sugar': 250.0, 'eggs': 5.0} Example 3: Matrix Multiplication Matrix multiplication is a common operation in scientific computing and data analysis. Here’s ...
https://leetcode.com/problems/multiply-strings/ Given two numbers represented as strings, return multiplication of the numbers as a string. Note: The numbers can be arbitrarily large and are non-negative. 题意分析 Input: two numbers expressed as string Output:the multiply of the two sums Condi...