Two Sumeasy

fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
    // TODO: return indices of two numbers that add up to target
    vec![]
}

fn main() {
    let nums = vec![2, 7, 11, 15];
    let target = 9;
    let result = two_sum(nums, target);
    println!("{:?}", result); // expect [0, 1]
}