sum
To compute a sum we can use the + operator and add values together. Yet, it would be excessively difficult to do that for large lists (imagine if there are 100 values).
Python has a built-in function sum which given a list computes the sum of its elements.
l = [1, 2, -2, 5, 10, -1]
print(l[0] + l[1] + l[2] + l[3] + l[4] + l[5]) # 15
print(sum(l)) # 15Challenge
Having 8 floating-point numbers in the input, your task is to print the sum of 8, then the sum of the first 7 elements, then the sum of the first 6, the sum of 5, 4, ..., up to one element.
Input | Output |
|---|---|
1 | 36 |
Tip 1
You can use del to remove the last element after each sum calculation
Tip 2
You can use slices + sum
Constraints
Time limit: 2 seconds
Memory limit: 512 MB
Output limit: 1 MB