By coding algorithm and using some liberal prints with small set of data, you can learn to understand the basic algorithms better than just reading about them.

Here simple selection sort.

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``````""" demonstrating simple selection sort with prints"""

data = [64, 25, 12, 25, 22, 11, 62]

for current in range(len(data)-1):
min_value_index = current
print('Sorted: %s, Checking: %s' % (data[:current],data[current:]))
for index, d in enumerate(data[current:], current):
if data[min_value_index] > d:
min_value_index = index
if min_value_index != current:
data[current], data[min_value_index] = data[min_value_index], data[current]
else:
print('No swap needed')

print(data)``````

IT Pro doing Eng-Fin-Eng translations

OK, if you put one print more you can find a stupid thing I do. Up vote for first one to spot it.

``````""" demonstrating simple selection sort with prints"""

data = [64, 25, 12, 25, 22, 11, 62]

for current in range(len(data)-1):
min_value_index = current
print('Sorted: %s, Checking: %s' % (data[:current],data[current:]))
# min_value_index = current, does not need to check that -> + 1
for index, d in enumerate(data[current + 1:], current + 1):
#print(index, min_value_index)
if data[min_value_index] > d:
min_value_index = index
if min_value_index != current:
data[current], data[min_value_index] = data[min_value_index], data[current]
else:
print('No swap needed')