Question

Consider the following recursive method. public static string recur(int val) { string dig = "" + (val % 3); if (val / 3 > 0) return dig + recur(val / 3); return dig; } what is printed as a result of executing the following statement? system.out.println(recur(32));

Answer 1

The recursive method recur executes itself from within

When the statement System.out.println(recur(32)); is executed, the string value "2101" is printed

How to determine the output of the statement?

The flow of the program is as follows:

• The method keeps updating the string variable dig with the remainder of the val variable divided by 3
• When the remainder is less than or equal to 0, the method is exited

So, when 32 is divided by 3.

The remainders are 2, 1, 0 and 1

So, the output of the statement is "2101"

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