Sum Earnings

[rosdyana]

Challenge

• write a function that accepts a comma-separated string input of earning/spending activity and returns the sum of earnings as a single int value
• if at any point the spending (negative) value is greater than the sum of earned (positive) values before it then the streak ends and the count should start over

We have a list in string type separated by commas that represented buy or sell activity. Positive value for selling and negative value for buying activity.
For example, in the following string, this user sold something for $7 on the 2nd day, and something for $2 on the 4th day, and then bought something for $12 on the 5th day, and so on.

0,7,0,2,-12,3,0,2

This user's highest earnings streak is $5, which started on the 6th day and ended on the 8th day. The streak does not start before the 6th day because the user spent $12 on the 5th and broke earlier streak on $9.

test data

input:
1,3,-2,1,2
output:
5

input:
0,7,0,2,-12,3,0,2
output:
5

starter code

def sum_earnings(input):

notes

• If the user did not do anything (i.e. 0,0,0,0,0) or only bought things without selling anything (i.e. -4,-3,-7,-1), then it should output with 0.
• Your program should be able to handle a comma-separated string consisting of any number of values.
• Your program should also be able to handle invalid input. If an invalid input is given, it should output 0. some examples of invalid input:
  qwerty
,,3,,4
1,2,v,b,3

[the-vampiire]

@rosdyana hey thanks for the new challenge! i think you forgot the goal / challenge of the problem. would this be correct?

your function should accept a comma-separated string input of earning/spending activity and return the sum of earnings as a single int value

[rosdyana]

@the-vampiire yeah, you're correct 👍

[mikelane]

In the test data, can you explain why the streak is 5?

input:
1,3,-2,1,2
output:
5

I think it should be 4 starting on the 1st day and ending on the 2nd day.

[rosdyana]

hi @mikelane , it's 5 because the spending (-2) is less than earning (1+3), he still have $2 , so it's not broke the rules.
the second example
0,7,0,2,-12,3,0,2
after got $9 from earning, he spent $12, and the balance become minus, so it's broke the rules and need start counting the highest earning from 6th till 8th days

[mikelane]

Should this be able to handle float values?