TOSHIBA | ONCAMPUS | OA

Round 1

Questions:

• 15 questions based on C
• 1 coding question
• 25 questions based on math, cognitive ability, and logical reasoning

The coding question was: You will be given an array which will be multiples of 3 and some array elements will not be a multiple of 3. If it is not a multiple, then either add or subtract a number from it to make it a multiple of 3. You need to return the minimum number of times you add or subtract from a number to make it a multiple of 3.

Test Case 1: Input: arr = [12, 21, 3, 4]
Output: 1
Explanation: 12, 21, and 3 are all multiples of 3, but 4 is not a multiple. So, subtract 1 from it to make it a multiple of 3. Total operations made was 1 (by subtracting 1 from 4).

Test Case 2: Input: arr = [4, 5]
Output: 2

int solve(vector<int>& ans)
{
    int n = ans.size();
    int sum = 0;
    for(int i = 0; i < n; i++)
    {
        int a = min(3 - ans[i] % 3, ans[i] % 3);
        sum += a;
    }
    return sum;
}