254716275730: Duara Internship Code Challenge May 2018 submission

Codes/license.py

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+'''
+Duara Internship Code Challenge
+
+Task 1
+
+This program stores and queries a list of license plate number
+'''
+import random
+import re
+
+letters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+numbers = '0123456789'
+
+
+#stores the number plates to a file
+def store():
+    with open('license.txt', 'w') as file:
+        for x in range(0, 200000):
+            license = random.choice(letters) + random.choice(
+                letters) + random.choice(letters) + '-' + random.choice(
+                    numbers) + random.choice(numbers) + random.choice(numbers)
+            file.write(license + '\n')
+
+    query()
+
+
+def query():
+    lst = []  # the list will store  license plates that begin with PLB
+    regex1 = 'PLB-123'  # regex pattern to search if a PLB-123 is a member of a set
+    regex2 = '^(PLB)'  # regex pattern to search plates that begin with PLB
+    file = open('license.txt', 'r')
+    for plates in file:
+        plates = plates.strip()
+        if re.match(regex1, plates):
+            print 'license plate PLB-123 a member of the set'
+        if re.match(regex2, plates):
+            lst.append(plates)
+    print 'Number of license plates that begin with PLB: ' + str(len(lst))
+    if len(lst) > 0:
+        print 'List of license plates that begin with PLB:'
+        for x in lst:
+            print x
+
+
+store()

Codes/recursive.py

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+'''
+Duara Internship Code Challenge
+
+Task 2
+
+Write a function that divides two numbers and returns their quotient.
+Use recursive subtraction to find the quotient.
+The function should only take two arguments.
+'''
+
+
+def quotient(numerator, denominator):
+    if 0 <= numerator < denominator:
+        return 0
+    if numerator >= denominator:
+        return quotient(numerator - denominator, denominator) + 1
+    if numerator < 0:
+        return quotient(numerator + denominator, denominator) - 1
+
+print quotient(23.6,5.6)

Codes/t9.py

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+'''
+Duara Internship Code Challenge - 22nd May 2018
+
+Task 4
+
+Converting a list of t9 characters and returning a list of all words in dictionary represented in a dictionary
+'''
+import re
+
+keypad = ['', '', 'abc', 'def', 'ghi', 'jkl', 'mno', 'pqrs', 'tuv', 'wxyz']
+
+
+def convert(number):
+    possible_words = []
+    number_str = str(number)
+    pattern = "^"
+    for x in number_str:
+        pattern = pattern + "[" + keypad[int(x)] + "]"
+    pattern += "$"  #regex pattern to search the words that match the pattern in the dictionary provided with valid words
+    file = open('words.txt', 'r')
+    for word in file:
+        if re.match(pattern, word.lower()):
+            possible_words.append(word.strip())
+
+    print possible_words
+
+
+convert('228')