4. (12 points) Consider the contract for the method digitAt, shown below. For example, given a call with n=12345 and pos =1, the method should return 4 (the tens digit in n ). Complete the body of method digitat. Use only int arithmetic. You cannot use the types String, array or double, nor the Math. pow () function. For full credit, your method must use a single return statement and no break statements. Avoid unnecessary complexity and inefficiencies. /** * Reports the digit at position pos in integer n where position * 0 is the ones position, position 1 is the tens, position 2 is * the hundreds, etc. * * erequires n>=0 and * 10