The following python program uses the built-in function max[] to find the largest of 4 numbers. The max function can take any number of arguments and hence can be used to find maximum of 3 or 5 numbers as well,
num1 = 10 num2 = 20 num3 = 30 num4 = 40 print[max[num1,num2,num3,num4]] # prints 40
The following python program accepts any number of numbers from the user and prints the maximum value. In this example we add all the user inputs to a list and then the list is passed to the max function to get the maximum value. The program assumes that to stop input of numbers user will enter zero.
numbers = []
while True:
number = int[input["Please enter a number. Enter 0 to finish.: "]]
if number == 0:
break
numbers.append[number]
print["maximum of {} is {}".format[numbers,max[numbers]]]Here is a sample output from the above program,
Please enter a number. Enter 0 to finish.: 5
Please enter a number. Enter 0 to finish.: 30
Please enter a number. Enter 0 to finish.: 10
Please enter a number. Enter 0 to finish.: 0
maximum of [5, 30, 10] is 30
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Given a list of numbers, the task is to write a Python program to find the largest number in given list.
Examples:
Input : list1 = [10, 20, 4] Output : 20
Input : list2 = [20, 10, 20, 4, 100] Output : 100
Method 1: Sort the list in ascending order and print the last element in the list.
Python3
list1 = [10, 20, 4, 45, 99]
list1.sort[]
print["Largest element is:", list1[-1]]
Output
Largest element is: 99
Method 2: Using max[] method
Python3
list1 = [10, 20, 4, 45, 99]
print["Largest element is:", max[list1]]
Output
Largest element is: 99
Method 3: Find max list element on inputs provided by user
Python3
list1 = []
num = int[input["Enter number of elements in list: "]]
for
i in range[1, num + 1]:
ele = int[input["Enter elements: "]]
list1.append[ele]
print["Largest element is:", max[list1]]
Output:
Enter number of elements in list: 4 Enter elements: 12 Enter elements: 19 Enter elements: 1 Enter elements: 99 Largest element is: 99
Method 4: Without using built-in functions in python:
Python3
def myMax[list1]:
max = list1[0]
for
x in list1:
if x > max:
max = x
return max
list1 = [10, 20, 4, 45, 99]
print["Largest element is:", myMax[list1]]
Output
Largest element is: 99
Method 5: Use the max[] and def functions to find the largest element in a given list. The max[] function prints the largest element in the list.
Python3
def maxelement[lst]:
print[max[lst]]
lst = [20, 10, 20, 4, 100]
maxelement[lst]
Method: Using the lambda function
Python3
lst =
[20, 10, 20, 4, 100]
print[max[lst, key=lambda value: int[value]] ]
Method: Using reduce function
Python3
from functools import reduce
lst = [20, 10, 20, 4, 100]
largest_elem = reduce[max, lst]
print[largest_elem]
Time Complexity: O[n]
Auxiliary Space: O[1]