给定一个整数数组,请编写一个函数,找出数组中第二大的数。如果数组长度小于2,则返回-1。```pythondef find_second_max(nums):if len(nums) first_max:second_max = first_maxfirst_max = numelif num > second_max and num != first_max:second_max = numreturn second_max
Python provides two handy functions,max()andmin(), that makes it easy to find the largest (or the smallest) item in any iterable (e.g. list, set or array) of comparable elements. In this beginner-friendly guide, we’ll explore how to usemax()andmin()effectively. Quick Reference number...
str = "welcome to Python" print(str.find("Python",12)) 1. 2. 因为我们从第12个字符开始,所以找不到 Python 这个单词,所以它会返回 -1。 获取子字符串 所以我们得到了我们要搜索的字符串的索引,现在我们要打印匹配的字符串。 你可以按索输出印字符串,如下所示: str = "first second third" print(s...
max_val, min_val = find_max_min(lst) print("最大值:", max_val) print("最小值:", min_val) ```相关知识点: 试题来源: 解析 解析:该程序定义了一个函数`find_max_min`,接受一个列表作为参数,并返回列表中的最大值和最小值。通过遍历列表,不断更新最大值和最小值的变量,最后返回它们的值。
Bothsetandfrozensetsupport set to set comparisons. Two sets are equal if and only if every element of each set is contained in the other (each is a subset of the other). A set is less than another set if and only if the first set is a proper subset of the second set (is a subse...
Python program to find local max and min in pandas# Import numpy import numpy as np # Import pandas import pandas as pd # Creating a DataFrame np.random.seed(0) rs = np.random.randn(20) xs = [0] for r in rs: xs.append(xs[-1]*0.9 + r) df = pd.DataFrame(xs, columns=['...
Python Code: # Define a function that returns the maximum of two numbersdefmax_of_two(x,y):# Check if x is greater than yifx>y:# If x is greater, return xreturnx# If y is greater or equal to x, return yreturny# Define a function that returns the maximum of three numbersdefmax...
To find the maximum of a set of numbers, you can use the max() function in Python. This function takes in a list of numbers and returns the maximum value. For example, if you have a list of numbers [1,2,3,4,5], the max() function will return 5....
In Python, we can perform the task in multiple ways using one of the multiple methods that are present in the function.Method 1: A way to find the solution is by using list comprehension and to find the maximum values out of all elements of the array, we will use the max() method....
Python Code: # Importing the NumPy libraryimportnumpyasnp# Creating a 2x2 array 'a' using arange and reshapea=np.arange(4).reshape((2,2))# Displaying the original flattened array 'a'print("Original flattened array:")print(a)# Finding and displaying the maximum value of the flattened array...