More solutions for week 133

1 files changed, 52 insertions, 0 deletions

diff --git a/challenge-133/abigail/java/ch-2.java b/challenge-133/abigail/java/ch-2.java
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+++ b/challenge-133/abigail/java/ch-2.java
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+//
+// See ../README.md
+//
+
+//
+// Run as: ln ch-2.java ch2.java; javac ch2.java; java ch2 < input-file
+//
+
+import java.util.*;
+
+public class ch2 {
+    public static int base  = 10;
+    public static int count = 10;
+    public static int [] small_primes =
+                        {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31};
+
+    public static int digitsum (int number) {
+        int sum = 0;
+        while (number > 0) {
+            sum    += number % base;
+            number /= base;
+        }
+        return (sum);
+    }
+
+    public static void main (String [] args) {
+        int number = 1;
+        int c = count;
+        while (c > 0) {
+            int ds_n = digitsum (++ number);
+            int ds_f = 0;
+            int n    = 0;
+            int copy = number;
+            for (int i = 0; i < small_primes . length && copy > 1; i ++) {
+                int prime = small_primes [i];
+                while (copy % prime == 0) {
+                    ds_f += digitsum (prime);
+                    n ++;
+                    copy /= prime;
+                }
+            }
+            if (copy > 1) {
+                ds_f += digitsum (copy);
+                n ++;
+            }
+            if (n > 1 && ds_n == ds_f) {
+                System . out . println (number);
+                c --;
+            }
+        }
+    }
+}