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Add Two Numbers

Given two non-negative integers represented as arrays of digits in reverse order (least significant digit first), return their sum as an array in the same reverse order.

Each element contains a single digit. The numbers do not have leading zeros except the number 0 itself.

Output as space-separated digits.

Example:

Input:

2,4,3
5,6,4

Output:

7 0 8

Reasoning:

The input arrays represent numbers in reverse order: $2 \cdot 10^2 + 4 \cdot 10^1 + 3 \cdot 10^0 = 243$ and $5 \cdot 10^2 + 6 \cdot 10^1 + 4 \cdot 10^0 = 564$ .
We add these two numbers: $243 + 564 = 807$ .
To get the output, we convert the sum back to an array of digits in reverse order: $807$ becomes $7$ , $0$ , $8$ .
The final output is the sum as an array in the same reverse order, with space-separated digits: $7 0 8$ .

Constraints:

1 <= len(l1), len(l2) <= 100
0 <= l1[i], l2[i] <= 9

Editor

Python 3.13.1

Test Results

0/0

Run code to see test results.