Find Largest Number in List Using While Loop In Python

Now we are going to find the largest number in a list using a while loop in Python:

Simple code:

my_list = [3, 12, 8, 19, 1, 8, 10]
largest_num = my_list[0]
i = 1
while i < len(my_list):
    if my_list[i] > largest_num:
        largest_num = my_list[i]
    i += 1
print("The largest number in the list is:", largest_num)

Output:

The largest number in the list is: 19

Code with comments:

# initialize the list of numbers
my_list = [3, 12, 8, 19, 1, 8, 10]

# initialize the largest_num variable to the first element of the list
largest_num = my_list[0]

# initialize the counter i to 1
i = 1

# continue looping until i reaches the end of the list
while i < len(my_list):
    # check if the current element is greater than the largest_num variable
    if my_list[i] > largest_num:
        # update the largest_num variable to the current element
        largest_num = my_list[i]
    # increment the counter i by 1
    i += 1

# print the largest number in the list
print("The largest number in the list is:", largest_num)

In the above code, we first initialize the list of numbers my_list and the largest_num variable to the first element of the list. We also initialize the counter i to 1.

We use a while loop to iterate through the list and check if the current element is greater than the largest_num variable. If it is, we update the largest_num variable to the current element.

We then increment the counter i by 1 and continue looping until i reach the end of the list.

Finally, we print the largest number in the list using the print() function.