Insertion Sort

Create A Sequence

alist = [8,5,3,6,2,1,9,4,7]
alist
[8, 5, 3, 6, 2, 1, 9, 4, 7]


Create A Selection Sort Algorithm

# Define an function that takes a list
def insertion_sort(alist):

# Create a sequence from the argument list
sequence = alist[:]

# Get the length of the list
n = len(sequence)

# For 1 through the length for the sequence:
for i in range(1, n):

# save the value of the card
value = sequence[i]

# save the current position of the card
position = i

# while the card is not the first card and is smaller than the card to it's left:
while position > 0 and value < sequence[position - 1]:
# the card overwrites the card to the left
sequence[position] = sequence[position - 1]
# And we move on to the next position
position -= 1

# When we have found the right position (meaning the while loop is false)
# put the card in its correct spot in the deck
sequence[position] = value

# View the deck so far
print(sequence)
# Run the sort
insertion_sort(alist)
[5, 8, 3, 6, 2, 1, 9, 4, 7]
[3, 5, 8, 6, 2, 1, 9, 4, 7]
[3, 5, 6, 8, 2, 1, 9, 4, 7]
[2, 3, 5, 6, 8, 1, 9, 4, 7]
[1, 2, 3, 5, 6, 8, 9, 4, 7]
[1, 2, 3, 5, 6, 8, 9, 4, 7]
[1, 2, 3, 4, 5, 6, 8, 9, 7]
[1, 2, 3, 4, 5, 6, 7, 8, 9]