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Added URL-SHORTNER #467

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Added URL-SHORTNER #467

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30 changes: 30 additions & 0 deletions Python/URL-SHORTNER.py
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Original file line number Diff line number Diff line change
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# Python3 code for above approach
def idToShortURL(id):
map = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
shortURL = ""

# for each digit find the base 62
while(id > 0):
shortURL += map[id % 62]
id //= 62

# reversing the shortURL
return shortURL[len(shortURL): : -1]

def shortURLToId(shortURL):
id = 0
for i in shortURL:
val_i = ord(i)
if(val_i >= ord('a') and val_i <= ord('z')):
id = id*62 + val_i - ord('a')
elif(val_i >= ord('A') and val_i <= ord('Z')):
id = id*62 + val_i - ord('Z') + 26
else:
id = id*62 + val_i - ord('0') + 52
return id

if (__name__ == "__main__"):
id = 12345
shortURL = idToShortURL(id)
print("Short URL from 12345 is : ", shortURL)
print("ID from", shortURL, "is : ", shortURLToId(shortURL))