How to Remove the Decimal Part of a Number in JavaScript ?

Binary Representation of Previous Number in JavaScript

Last Updated : 17 May, 2024

Given a binary input of a positive number, our task is to find the binary representation of a number that is one less than a given binary number n in JavaScript.

Example:

Input: 100010
Output: 100001
Explanation: The decimal of 100010 is 34 and 100001 is 33.

Approach

The function "previousBinary1" converts the input binary string to a decimal number using "parseInt(binary, 2)".
It subtracts 1 from the decimal value to find the previous number.
The function converts the resulting decimal number back to a binary string using "toString(2)".
The resulting binary string, which represents the previous number, is returned by the function.
The function call console.log(previousBinary1('100010')) prints the previous binary number, resulting in '100001'.

Example: The example below shows how to Find the binary representation of previous number using Brute Force Approach.

JavaScript

function previousBinary1(binary) {
    
    // Parse Binary to Decimal
    const decimal = parseInt(binary, 2);
    
    // Subtract 1
    const previousDecimal = decimal - 1;
    
    // Convert Back to Binary
    const previousBinary = previousDecimal.toString(2);
    
    return previousBinary;
}

console.log(previousBinary1('100010'));

Output

Time Complexity: O(n)

Space Complexity: O(log M)

How to Remove the Decimal Part of a Number in JavaScript ?

bug8wdqo

Improve

Article Tags :

Similar Reads

Print all Positive Numbers in JavaScript Array

In JavaScript, arrays are the data structures used to store multiple elements. In some cases, we need to extract the elements that satisfy a specified condition. We can use a condition to extract all the positive numbers from an array with the below approaches. Example:Input: arr = [-1, -12, 35, -8,

How to Remove the Decimal Part of a Number in JavaScript ?

The decimal portion of a number in JavaScript can be removed through various methods, including the Math. trunc( ) method, Math. floor( ) method, Math. ceil( ) method, and Math. round( ) method. SyntaxMath.trunc(11.5) // Output: 11Math.floor(12.5) // Output: 12Math.ceil(15.5) // Output: 15Math.round

JavaScript Number Static Properties

The JavaScript Number is an object that can represent numeric values like integer, float, hexadecimal, decimal, etc. It acts as a wrapper object for primitive numeric values. It has various methods and properties that are used to perform different tasks on numbers. The following table shows some sta

JavaScript - Use map() on an Array in Reverse Order

Here are the different methods to use map() on an array in reverse order with JavaScript 1. Using JavaScript array.reverse() methodThe idea is to use the .reverse() method just after applying the .slice() method. Then use the .map() method on the reversed array to perform the task. [GFGTABS] JavaScr

Boundary Traversal of Binary Tree using JavaScript

The Boundary Traversal of the Binary Tree can be done by traversing the left, right, and leaf parts of the Binary Tree. We will break the Boundary Traversal of Binary Tree using JavaScript in three parts. First, we will traverse the left part, right part, and leaf parts of the Binary Tree and print

How numbers are stored in JavaScript ?

In this article, we will try to understand how numbers are stored in JavaScript. Like any other programming language, all the data is stored inside the computer in the form of binary numbers 0 and 1. Since computers can only understand and process data in the form of 0's and 1's. In JavaScript, ther

Javascript Program to Find closest number in array

Given an array of sorted integers. We need to find the closest value to the given number. Array may contain duplicate values and negative numbers. Examples: Input : arr[] = {1, 2, 4, 5, 6, 6, 8, 9} Target number = 11 Output : 9 9 is closest to 11 in given array Input :arr[] = {2, 5, 6, 7, 8, 8, 9};

Reverse an Array in JavaScript

Here are the different methods to reverse an array in JavaScript 1. Using the reverse() MethodJavaScript provides a built-in array method called reverse() that reverses the elements of the array in place. This method mutates the original array and returns the reversed array. [GFGTABS] JavaScript let

Find the Preorder Successor of a Given Node in a Binary Tree using JavaScript

The Preorder successor of a given node is a node that occurs after the given node in the preorder traversal of the binary tree. The preorder traversal is a traversal in which the root node is visited first, then the left child, and then the right child. Example: The pre-order successor of a binary t

Javascript Program For Adding 1 To A Number Represented As Linked List

Number is represented in linked list such that each digit corresponds to a node in linked list. Add 1 to it. For example 1999 is represented as (1-> 9-> 9 -> 9) and adding 1 to it should change it to (2->0->0->0) Below are the steps : Reverse given linked list. For example, 1->