In this shot, we’ll learn how to convert a negative number to a positive number in JavaScript.
We’ll start with the problem statement and then look at an example.
Given a negative integer n, convert it to a positive integer.
Input: -20
Output: 20
We will solve this problem in two ways:
-1.abs() method.-1In this approach, we’ll convert a negative integer to a positive integer by multiplying the negative integer with -1.
//given negative integerlet n = -20;//print original nconsole.log("Given negative integer n = " + n);//convert n to positive integern = n * -1//print positive nconsole.log("After conversion value of n = " + n)
Let’s look at the explanation of the code snippet above.
Line 2: We set the value of the integer n as -20.
Line 5: We print the original integer n.
Line 8: We multiply the negative integer by -1 and assign the result to n.
Line 11: We print the converted positive integer n.
abs() methodIn this approach, we’ll use a built-in method provided by the Math module in JavaScript.
The method Math.abs() converts the provided negative integer to a positive integer.
//given negative integerlet n = -20;//print original nconsole.log("Given negative integer n = " + n);//convert n to positive integern = Math.abs(n)//print positive nconsole.log("After conversion value of n = " + n)
Let’s look at the explanation of the code snippet above.
Line 2: We set the value of the integer n as -20.
Line 5: We print the original integer n.
Line 8: We pass n as an argument to the Math.abs() method and assign the result to n.
Line 11: We print the converted positive integer n.