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Added doctest and more explanation about Dijkstra execution. (#1014)

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* Added doctest and more explanation about Dijkstra execution.

* tests were not passing with python2 due to missing __init__.py file at number_theory folder

* Removed the dot at the beginning of the imported modules names because 'python3 -m doctest -v data_structures/hashing/*.py' and 'python3 -m doctest -v data_structures/stacks/*.py' were failing not finding hash_table.py and stack.py modules.

* Moved global code to main scope and added doctest for project euler problems 1 to 14.

* Added test case for negative input.

* Changed N variable to do not use end of line scape because in case there is a space after it the script will break making it much more error prone.

* Added problems description and doctests to the ones that were missing. Limited line length to 79 and executed python black over all scripts.

* Changed the way files are loaded to support pytest call.

* Added __init__.py to problems to make them modules and allow pytest execution.

* Added project_euler folder to test units execution

* Changed 'os.path.split(os.path.realpath(__file__))' to 'os.path.dirname()'
This commit is contained in:
Bruno Simas Hadlich
2019-07-16 20:09:53 -03:00
committed by cclauss
parent 2fb3beeaf1
commit 267b5eff40
100 changed files with 2621 additions and 1438 deletions
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47
project_euler/problem_40/sol1.py
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@ -1,26 +1,47 @@
#-.- coding: latin-1 -.-
from __future__ import print_function
'''
# -.- coding: latin-1 -.-
"""
Champernowne's constant
Problem 40
An irrational decimal fraction is created by concatenating the positive integers:
An irrational decimal fraction is created by concatenating the positive
integers:
0.123456789101112131415161718192021...
It can be seen that the 12th digit of the fractional part is 1.
If dn represents the nth digit of the fractional part, find the value of the following expression.
If dn represents the nth digit of the fractional part, find the value of the
following expression.
d1 × d10 × d100 × d1000 × d10000 × d100000 × d1000000
'''
"""
from __future__ import print_function
constant = []
i = 1
while len(constant) < 1e6:
constant.append(str(i))
i += 1
def solution():
"""Returns
constant = ''.join(constant)
>>> solution()
210
"""
constant = []
i = 1
print(int(constant[0])*int(constant[9])*int(constant[99])*int(constant[999])*int(constant[9999])*int(constant[99999])*int(constant[999999]))
while len(constant) < 1e6:
constant.append(str(i))
i += 1
constant = "".join(constant)
return (
int(constant[0])
* int(constant[9])
* int(constant[99])
* int(constant[999])
* int(constant[9999])
* int(constant[99999])
* int(constant[999999])
)
if __name__ == "__main__":
print(solution())