Learn AI Create the Future — with Pranay
Main site

LeetCode solutions

2863. Calculator with Method Chaining

My accepted JavaScript solution to LeetCode problem 2863, Calculator with Method Chaining, running in 44ms.

  • Difficulty: Easy
  • JavaScript
  • Runtime 44ms
  • Memory 53.1MB

Read the problem on LeetCode View on GitHub

The problem statement is LeetCode’s and stays on their site. What follows is my accepted solution.

JavaScript

Accepted on LeetCode — runtime 44ms, memory 53.1MB, accepted 2025-12-31.

javascript
class Calculator {
    /**
     * @param {number} value
     */
    constructor(value) {
        this.result = value;
    }

    /**
     * @param {number} value
     * @return {Calculator}
     */
    add(value) {
        this.result += value;
        return this;
    }

    /**
     * @param {number} value
     * @return {Calculator}
     */
    subtract(value) {
        this.result -= value;
        return this;
    }

    /**
     * @param {number} value
     * @return {Calculator}
     */  
    multiply(value) {
        this.result *= value;
        return this;
    }

    /**
     * @param {number} value
     * @return {Calculator}
     */
    divide(value) {
        if (value === 0) {
            throw new Error("Division by zero is not allowed");
        }
        this.result /= value;
        return this;
    }

    /**
     * @param {number} value
     * @return {Calculator}
     */
    power(value) {
        this.result = Math.pow(this.result, value);
        return this;
    }

    /**
     * @return {number}
     */
    getResult() {
        return this.result;
    }
}

Source