Question

write the pseudocode and code to solve the following: you are given a list. determine the sum of all the elements in the list without using the built in puthon function sum(). Take your code and create your own function and name it my_sum_algo() which will return the sum of numbers

PS please write comments in the code for my understanding, and please write jn jn PYTHON 3 languge. Thank you, have a great day !

Answer 1

#This is the code to calculate sum of list elements:

def my_sum_algo(list1):           #here the function is declared
    sum=0                         # a variable sum is taken and intially declared 0
    for i in range(0,len(list1)): # loop is runned from 0 to last index of list; len() funcion returns list size 
        sum=sum+list1[i]          # at each step each element's value is added in sum variable
    return sum                    #sum is returned here 
    
# here we write code to test our function:

list1=[9,4,5]               #list is intialised
answer=my_sum_algo(list1)   #our created function my_sum_algo is called and its return value is stores in answer
print(answer)               #answer is printed

For code identation refer the screenshot.

Output as per my list taken.

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Pseudocode :

for i in range(0,len(list1))
sum=sum+list1[i]   

# add each element and store in variable sum.