Incrementer.cpp

#include<iostream>
#include<algorithm>
#include<cmath>
#include<vector>
#include <string>
#include <iostream>
using namespace std;
vector<int> incrementer(vector<int> nums) {
    vector<int>result;
    for (int i = 0; i < nums.size(); i++)
    {
        if (nums[i] + 1 + i >= 20)
        {
            result.push_back(nums[i] + 1 + i - 20);
        }
        else if (nums[i] + 1 + i >= 10 && nums[i] + 1 + i <= 20)
        {
            result.push_back(nums[i] + 1 + i - 10);
        }
        else
        {
            result.push_back(nums[i] + 1 + i);
        }
    }
    return result;
}
int main() {
    vector<int>ss = incrementer({ 1, 2, 3, 4, 5, 6, 7, 8, 9, 9, 9, 9, 9, 8 });
    for (int i = 0; i < ss.size(); i++)
    {
        cout << ss[i] << "  ";
    }
    return 0;
}
/*Description:

Given an input of an array of digits, return the array with each digit incremented by its position in the array: the first digit will be incremented by 1, the second digit by 2, etc. Make sure to start counting your positions from 1 ( and not 0 ).

Your result can only contain single digit numbers, so if adding a digit with its position gives you a multiple-digit number, only the last digit of the number should be returned.
Notes:

    return an empty array if your array is empty
    arrays will only contain numbers so don't worry about checking that

Examples:

[1, 2, 3]  -->  [2, 4, 6]   #  [1+1, 2+2, 3+3]

[4, 6, 9, 1, 3]  -->  [5, 8, 2, 5, 8]  #  [4+1, 6+2, 9+3, 1+4, 3+5]
                                       #  9+3 = 12  -->  2

Fundamentals*/