Random Number Generator |Mid Square Method| ~xRay Pixy

Algorithm:

     Step 1. Stating with n (4 digits long) Digit Number.  
Step 2. Squaring it.
Step 3. For 8 digit: Remove 2 lower and 2 higher-order DigitStep 4. For 7 digit: Remove 1 higher-order digit & 2 lower order.Step 5. Repeat step 2

Mistake : For 7 digit: Remove 1 higher-order digit & 2 lower order.

Another Example

¡This method will either begin repeatedly generating the same number or Cycle to a previous number in the sequence and loop indefinitely