Added whole functionality of the base 64 decoder

bart.base64

@@ -0,0 +1,15 @@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=
+

base64Decoder.py

@@ -0,0 +1,79 @@
+"""
+Name: Shourya Raj
+Email: [email protected]
+"""
+
+
+
+class coder:
+    def __init__(self):
+        # Initializing the values of the standard Encoded characters
+        letters = "".join([
+            "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
+            "abcdefghijklmnopqrstuvwxyz",
+            "0123456789+/",
+        ])
+        # ziping in the Dictionary having key as char with the value of range i.e, index number of each characters
+        self.char2N = dict(zip(letters, range(len(letters))))
+
+
+    def base64Decorder(self, code):
+        """
+        It converts only non-padded value
+        :param code:  There is no need for the parameter it should ask from the terminal
+        :return: Return the decoded string
+        """
+
+        sixBitsLongeach = ""
+        # check = ''
+        for char in code:
+            numericalValue = self.char2N[char]
+            # {0:b} for the binary format and 06 for the number of the bits
+            binaryValue = '{0:06b}'.format(numericalValue)
+            # print(binaryValue)
+            sixBitsLongeach += str(binaryValue)
+            # check += str(binaryValue)+'////'
+
+        # print(check)
+
+        #Split into eight bits
+        eightBitsLongEach = ""
+        resultOfDecoded = ''
+        j=0
+        left = 0
+        right = 8
+        # Using two pointers to get the eight bytes and converting into Ascii values
+        while right <= len(sixBitsLongeach):
+            # Getting the Eight bytes {Left.......Right (total => 8)}
+            byte = sixBitsLongeach[left:right]
+            # Converting the value into int with base of 2
+            char = chr(int(byte, 2))
+            # adding the Result to the string
+            resultOfDecoded += char
+            # Shifting the left pointer at the position of the right pointer
+            left = right
+            # Shifting the Right by 8 bytes
+            right += 8
+
+        print(resultOfDecoded)
+        return resultOfDecoded
+# print(char2N)
+
+coder  = coder()
+stop = False
+
+while not stop:
+    print("Enter the Encoded value:  ")
+    code = input()
+    coder.base64Decorder(code)
+    if input() == 'end':
+        stop = True
+
+# KGl0J3Mp
+
+# while len(sixBitsLongeach) >= 8:
+#         #     byte = sixBitsLongeach[0:8]
+#         #     char = chr(int(byte, 2))
+#         #     resultOfDecoded += char
+#         #     sixBitsLongeach = sixBitsLongeach[8:]
+# Using Two Pointer