How to find the greatest number in a list in Python

Question

Is there any easy way or a builtin function to determine the greatest number in a python list? Can we find it without using builtin functions?

Answer 1

1. By using max function - 

highest = max(11, 21, 31) 

print(highest) # prints 31

2. Without using max function

a=[11,22,33,44,66,77,99,88,999]
max= 0
for i in a:
    if i > max:
        max=i
print(max) # prints 999

Comments

What if we write max=i directly down the line if i> max

Answer 2

Consider a list of numbers. Write a Python program to do the following:

1) Count total number of numbers in the list  

2) Sum and Average of all the numbers in the list  

3) Count and sum of all the odd numbers in the list  

4) Count and sum of all the even numbers in the list  

5) Find the largest number in the list  

6) Find the smallest number in the list  

Display all the values with appropriate titles.  

listNo = [6,8,10,44,33,21,7,1,0,2]

c = 0

s = 0

avg = 0

sOdd = 0

sEven = 0

cOdd = 0

cEven = 0

for i in listNo :

    c += 1

    s = s+i

    avg = s/c

    if i % 2 == 0 :

        sEven = sEven + i

        cEven = cEven + 1

    else :

        sOdd = sOdd + i

        cOdd = cOdd + 1

print ("total number of numbers in the list  : ", c)

print("sum of all numbers : ",s)

print("average of all numbers : ",avg)

print("count odd numbers : ",cOdd)

print("sum of odd numbers : ",sOdd)

print("count even numbers : ",cEven)

print("sum of odd numbers : ",sEven)

print("largest number in the list : " ,max(listNo))

print("smallest number in the list  : ",min(listNo))