Binary to decimal conversion in kotlin

Convert binary number into decimal number

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

/*
  Kotlin program for
  Convert binary to decimal number
*/
class DecimalNumber
{
	fun 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.get(n) == '1')
			{
				// When get binary 1
				result += (1 shl (bit));
			}
			n = n - 1;
			// Count number of bits
			bit += 1;
		}
		// Display decimal result
		println("  Decimal :  " + result);
	}
}
fun main(args: Array < String > ): Unit
{
	val task: DecimalNumber = 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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