📘

Two Sum

Given an array of integers and a target, return the indices of the two numbers that add up to the target.

Assume exactly one solution exists. Output two indices space-separated.

Input:

2,7,11,15
9

Output:

0 1

Reasoning:

The input array is $[2, 7, 11, 15]$ and the target sum is $9$ .
We iterate through the array to find two numbers that add up to the target: $2 + 7 =$ 9$, which matches the target.
The indices of these two numbers in the array are $0$ and $1$ , since array indices start at $0$ .
The final output is the space-separated indices: $0 1$

Editor

Python 3.13.1

0/0

Run code to see test results.

📘