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RecursiveFactorsPattern.java

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import java.util.*;

public class RecursiveFactorsPattern {

public static void findFactors(int num, int depth) {

List<Integer> factors = new ArrayList<>();

for (int i = 1; i <= num; i++) {

if (num % i == 0) {

factors.add(i);

}

}

for (Integer factor : factors) {

char[] hyphens = new char[depth];

Arrays.fill(hyphens, '-');

System.out.println(new String(hyphens) + factor);

if (factor != 1 && factor != num) {

findFactors(factor, depth + 1);

}

}

}

public static void main(String[] args) {

try (Scanner scanner = new Scanner(System.in)) {

int N = scanner.nextInt();

System.out.println("-" + N);

findFactors(N, 2);

}

}

}