😴 Replace all 0 with 1 in an input integer

Author: darpanjbora

Miscellaneous/ReplaceAll0with5InInputInteger.java

@@ -0,0 +1,29 @@
+/**
+ * Given a integer as a input and replace all the ‘0’ with ‘5’ in the integer.
+ * Use of array to store all digits is not allowed.
+ */
+
+class ReplaceAll0with5InInputInteger {
+
+    public static int recursivelyReplaceDigits(int num){
+
+        if(num == 0)
+            return 0;
+        int digit = num %10;
+        if(digit == 0)
+            digit = 5;
+        return recursivelyReplaceDigits(num/10)*10+digit;
+    }
+
+    public static int replaceDigits(int num){
+        if(num==0)
+            return 5;
+        return recursivelyReplaceDigits(num);
+    }
+
+    public static void main(String [] args){
+        System.out.println(replaceDigits(1230450));
+        System.out.println(replaceDigits(0));
+        System.out.println(replaceDigits(50));
+    }
+}