fn main() {
    let vec = vec![1, 3, 5, 6];
    dbg!(search_insert(vec, 5));

    let vec = vec![1, 3, 5, 6];
    dbg!(search_insert(vec, 2));

    let vec = vec![1, 3, 5, 6];
    dbg!(search_insert(vec, 7));
}

fn search_insert(nums: Vec<i32>, target: i32) -> i32 {
    for (i, item) in nums.iter().enumerate() {
        if *item >= target {
            return i as _;
        }
    }
    nums.len() as _
}