Recursive Backtracking countDecimal Write a method countDecimal that accepts an

Question

Recursive Backtracking countDecimal Write a method countDecimal that accepts an integer n as a parameter and that prints all decimal (base-10) numbers that have n digits in ascending order, printing each value on a separate line. All n digits should be shown for all numbers, including leading zeros if necessary. You may assume that n is non-negative. If n is 0, a blank line of output should be produced. You may use a loop to remove redundancy within a single digit's values of 0-9, but you must still implement the overall algorithm recursively.

Explanation / Answer

int countDecimal(int n) { if (n==0) { System.out.println(" "); return 1; } for(int i=1; i

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