Binary to decimal conversion in scala

Convert binary number into decimal number

Scala program for Binary to decimal conversion. Here more solutions.

import scala.collection.mutable._;
/*
  Scala program for
  Convert binary to decimal number
*/
class DecimalNumber()
{
	def binaryTodecimal(number: String): Unit = {
		// Assuming that number contains 0,1s
		// Used to store result
		var result: Long = 0;
		var bit: Int = 0;
		var n: Int = number.length() - 1;
		// Display Binary number
		print("Binary :  " + number);
		// Execute given number in reverse order
		while (n >= 0)
		{
			if (number.charAt(n) == '1')
			{
				// When get binary 1
				result += (1 << (bit));
			}
			n = n - 1;
			// Count number of bits
			bit += 1;
		}
		// Display decimal result
		println("  Decimal :  " + result);
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		var task: DecimalNumber = new DecimalNumber();
		// Test Cases
		task.binaryTodecimal("1111");
		task.binaryTodecimal("10111");
		task.binaryTodecimal("10101");
		task.binaryTodecimal("1001");
		task.binaryTodecimal("1101");
	}
}

Output

Binary :  1111  Decimal :  15
Binary :  10111  Decimal :  23
Binary :  10101  Decimal :  21
Binary :  1001  Decimal :  9
Binary :  1101  Decimal :  13


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