Sum of Strings
Find the sum of two integers represented as strings.
For example, given the string "123" and the string "111", your code should return the string "234".
Examples
| First Argument | Second Argument | Expected Output |
|---|---|---|
| "10" | "20" | "30" |
| "48" | "2" | "50" |
| "-500" | "500" | "0" |
| "987" | "23" | "1000" |
| "36" | "23" | "59" |