arr (list): 待分区的列表。 low (int): 子数组的起始索引。 high (int): 子数组的结束索引。 返回: int: 基准元素分区后所在的最终索引。 """ pivot = arr[high]# 选择子数组的最后一个元素作为基准 # i 指针用于追踪“小于等于基准”区域的右边界。 # 初始时,这个区域是空的,所以 i 指向 low 的前一个位置
L0 = B0[0: int((len(B0)) / 2)] R0 = B0[int((len(B0)) / 2): len(B0)] # 定义拆分函数,把列表分为左右两个子列表 return L0, R0 L1, R1 = dividelist(B1) LL1, RL1 = dividelist(L1) # 这部分最终将8个数的列表分为,4个2个元素的子列表 LR1, RR1 = dividelist(R1) MERGE_SO...
arr (list): 待排序的列表。 low (int): 当前处理的子数组的起始索引。 high (int): 当前处理的子数组的结束索引。 """ # 递归的基线条件: 当子数组只有一个或零个元素时,停止分裂。 iflow<high: # 步骤1: 分解 (Divide) # 找到中间点,避免使用 (low+high)//2 以防止在某些语言中可能出现的整数...
print("Hello, " + 123) # TypeError: can only concatenate str (not "int") to str x = 1 / 0 # ZeroDivisionError: division by zero d = {} d['nonexistent_key'] # KeyError: 'nonexistent_key' numbers = [1, 2, 3] print(numbers[3]) # IndexError: list index out of range2.1.2 ...
try:x = int(input("Enter a number: "))y = 10 / xexcept ValueError:print("Invalid input. Please enter a valid number.")except ZeroDivisionError:print("Cannot divide by zero.")else:print(f"The result is: {y}")finally:print("Execution completed.")这个例子演示了如何捕获和处理 ValueError ...
# ✅ divide each element in list by number using floor division new_list_2 = [item // 2 for item in my_list] print(new_list_2) # 👉️ [4, 6, 10] 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 我们使用列表推导来遍历列表并将每个列表项除以 2。
Then divide the value of our iterator by eight to determine which octet we are manipulating, and add that list value to the result. Take this result and put it in the string in the location defined by the current bit divided by eight. Then move on to doing the same thing with two. ...
现在我们创建了我们自己的加减乘除数学函数: add, subtract, multiply, 以及 divide 。重要的是函数的最后一行,例如 add 的最后一行是 return a + b ,它实现的功能是这样的: 1. 我们调用函数时使用了两个参数: a 和 b 。 2. 我们打印出这个函数的功能,这里就是计算加法( adding ) ...
When dividing by zero, NumPy will generate warnings and produce special values: import numpy as np data = np.array([1, 2, 0, 4]) result = data / 0 # Output with warnings: # [inf inf nan inf] To handle this more gracefully, you can usenp.dividewith theoutparameter: ...
Define a function that takes in a list of numbers and asks the user for an input value. Use a for loop to iterate through the list, Then use the append() function to divide each number by 2 and find its middle index. Prompt the user for their input when complete. The following exa...