java
Parameters: String octalNumber
A string holding the octal number.
Returns: An integer representing the decimal number.
The convertOctalToDecimal function takes in an Octal number as an input, processes it in Java, and returns the converted Decimal number.
Hello Programmers, we're glad you're here. Today, we're going to take a deep dive into a common programming task - converting Octal to Decimal numbers. This post will walk you through the necessary steps needed to perform that task specifically in Java. If you've ever wondered how to do this, you're in the right place. Our steps are easy to follow, whether you're a beginner or an experienced coder. Let's get started!
Before moving onto coding, it's essential to understand the problem. We need to convert an octal number to a decimal number. In an octal number, each digit represents a power of 8, starting from the least significant digit (right-most digit) as 8^0 goes up with each digit.
Now, let's start by writing the function and declaring our required variables. We need a variable to store our result, a multiplier which will initially be 1 for 8^0 and an individual digit from the octal number for the calculation.
public int convertOctalToDecimal(int octal) {
int decimal = 0;
int ctr = 0;
int temp = 0;
We will start a loop where we extract the least significant digit, multiply it with the current multiplier and add it to the result. Then we increment the counter and update our multiplier by multiplying it with 8.
while (octal != 0) {
temp = octal % 10;
decimal += temp * Math.pow(8, ctr);
octal = octal / 10;
++ctr;
}
Now, our decimal variable holds the decimal equivalent of the given octal number. We can return this value from our function.
return decimal;
}
The full function to convert an octal number to its decimal equivalent in Java is as follows:
public int convertOctalToDecimal(int octal) {
int decimal = 0;
int ctr = 0;
int temp = 0;
while (octal != 0) {
temp = octal % 10;
decimal += temp * Math.pow(8, ctr);
octal = octal / 10;
++ctr;
}
return decimal;
}
A process of converting a number from base-8 to base-10 system.
Learn moreThis function works on the mathematical principle of number base systems. In any base-n system, each digit represents multiples of powers of n, and by summing these up, we can translate a number into base 10 (decimal). For an octal number, the base is 8. So, we multiply each digit of the octal number by 8 to the power of its position, counting from 0 in the rightmost place.
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