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ArrayMystery2

Language/Type: C# arrays array mystery

Consider the following method: 

public static void Mystery2(int[] list)
{
    for (int i = 0; i < list.Length - 1; i++)
    {
        if (i % 2 == 0)
        {
            list[i]++;
        }
        else
        {
            list[i]--;
        }
    }
}

For each array below, indicate what the array's contents would be after the method Mystery were called and passed that array as its parameter.

{6, 3}
{2, 4, 6}
{1, 2, 3, 4}
{2, 2, 2, 2, 2}
{7, 3, 2, 0, 5, 1}

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