tasks a-s

Task/Self-describing-numbers/Java/self-describing-numbers.java

@@ -0,0 +1,27 @@
+public class SelfDescribingNumbers{
+    public static boolean isSelfDescribing(int a){
+        String s = Integer.toString(a);
+        for(int i = 0; i < s.length(); i++){
+            String s0 = s.charAt(i) + "";
+            int b = Integer.parseInt(s0); // number of times i-th digit must occur for it to be a self describing number
+            int count = 0;
+            for(int j = 0; j < s.length(); j++){
+                int temp = Integer.parseInt(s.charAt(j) + "");
+                if(temp == i){
+                    count++;
+                }
+                if (count > b) return false;
+            }
+            if(count != b) return false;
+        }
+        return true;
+    }
+
+    public static void main(String[] args){
+        for(int i = 0; i < 100000000; i++){
+            if(isSelfDescribing(i)){
+                System.out.println(i);
+             }
+        }
+    }
+}