Sum from 1 to n
Detailed guide and Python implementation for the 'Sum from 1 to n' problem.
Problem Statement
Write a function sum_1_to_n(n) that returns the sum of integers from 1 to n.
- •1 <= n <= 10^5
Examples
sum_1_to_n(5)
15
1 + 2 + 3 + 4 + 5 = 15.
sum_1_to_n(10)
55
1 + 2 + ... + 10 = 55.
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
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