Sum of 1 to N
EasyP3Coding
Return 1 + 2 + ... + n using recursion. For n = 0 the sum is 0.
Example 1
- Input
- n = 5
- Output
- 15
- Why
- 1 + 2 + 3 + 4 + 5 = 15.
Example 2
- Input
- n = 0
- Output
- 0
Example 3
- Input
- n = 1
- Output
- 1
Constraints
- 0 <= n <= 500
Hints
Give it a real attempt first. Run shows which examples fail.
Saved automatically
Run checks the 3 visible tests, Submit all 8. ⌘Enter runs, ⌘⇧Enter submits.