def main():
sorter = Sorter()
userInput = None
while userInput != "":
userInput = input("[Enter '' to quit]: ")
if userInput != "":
sorter.addNum(userInput)
print("\n")
sorter.printList()
print("\n")
userInput = None
while userInput != "":
userInput = input(
"\n1. Insertion Sort \n2. Bubble Sort \n3. Selection Sort \n4. Shuffle \n> "
)
print("\nList before selection:")
sorter.printList()
if userInput == "1":
sorter.insertionSort()
elif userInput == "2":
sorter.bubbleSort()
elif userInput == "3":
sorter.selectionSort()
elif userInput == "4":
sorter.shuffle()
elif userInput != "":
print("invalid command")
print("\nList before selection:")
sorter.printList()
