Hi,
I am having problem writing a pseudocode for a challenge question on the OCR challenges document.
Question Below!!!!
""" A thief has managed to find out the four digits for an online PIN code, but doesn’t know the correct sequence needed to hack into the account. Design and write a program that displays all the possible combinations for any four numerical digits entered by the user. The program should avoid displaying the same combination more than once.
"""
Any helps appreciated. Thanks.