Create decimal_to_binary_converter.py

decimal_to_binary_converter.py

@@ -0,0 +1,32 @@
+# For concatenation
+def concat(S):
+	res = ""
+	for i in S:
+		if not isinstance(i, str):
+			res += str(i)
+		else:
+			res += i
+	return res 
+
+# Simple Base 10 number(Decimal) number converter to Base 2 number(binary) number
+# Function returns answer in str datatype
+# For understanding steps: http://www.electronics-tutorials.ws/binary/bin_2.html
+def decimal_to_binary(n):
+	res = []
+	while n != 0:
+		res.append(n % 2)
+		n = n // 2
+	final = concat(res) + "0"
+	return final[::-1]
+
+
+# Test
+cases = [123, 23455, 253552, 87985, 3479434, 76, 246572, 231, 69, 2, 7, 2, 543]
+for case in cases:
+	built_in = str(bin(case))[2:]
+	my_func = decimal_to_binary(case)[1:] # For test purposes
+	if built_in == my_func:
+		print("Decimal: " + str(case))
+		print("Binary: " + my_func + "\nTest Passed!\n")
+	else:
+		print("Test Failed! Badly!!\n")