Add solution #2726

Author: JoshCrozier

2726-calculator-with-method-chaining.js

@@ -0,0 +1,89 @@
+/**
+ * 2726. Calculator with Method Chaining
+ * https://leetcode.com/problems/calculator-with-method-chaining/
+ * Difficulty: Easy
+ *
+ * Design a Calculator class. The class should provide the mathematical operations of addition,
+ * subtraction, multiplication, division, and exponentiation. It should also allow consecutive
+ * operations to be performed using method chaining. The Calculator class constructor should
+ * accept a number which serves as the initial value of result.
+ *
+ * Your Calculator class should have the following methods:
+ * - add - This method adds the given number value to the result and returns the updated Calculator.
+ * - subtract - This method subtracts the given number value from the result and returns the
+ *   updated Calculator.
+ * - multiply - This method multiplies the result  by the given number value and returns the
+ *   updated Calculator.
+ * - divide - This method divides the result by the given number value and returns the updated
+ *   Calculator. If the passed value is 0, an error "Division by zero is not allowed" should
+ *   be thrown.
+ * - power - This method raises the result to the power of the given number value and returns
+ *   the updated Calculator.
+ * - getResult - This method returns the result.
+ *
+ * Solutions within 10-5 of the actual result are considered correct.
+ */
+
+class Calculator {
+  /**
+   * @param {number} value
+   */
+  constructor(value) {
+    this.value = value;
+  }
+
+  /**
+   * @param {number} value
+   * @return {Calculator}
+   */
+  add(value) {
+    this.value += value;
+    return this;
+  }
+
+  /**
+   * @param {number} value
+   * @return {Calculator}
+   */
+  subtract(value) {
+    this.value -= value;
+    return this;
+  }
+
+  /**
+   * @param {number} value
+   * @return {Calculator}
+   */
+  multiply(value) {
+    this.value *= value;
+    return this;
+  }
+
+  /**
+   * @param {number} value
+   * @return {Calculator}
+   */
+  divide(value) {
+    if (value === 0) {
+      throw new Error('Division by zero is not allowed');
+    }
+    this.value /= value;
+    return this;
+  }
+
+  /**
+   * @param {number} value
+   * @return {Calculator}
+   */
+  power(value) {
+    this.value **= value;
+    return this;
+  }
+
+  /**
+   * @return {number}
+   */
+  getResult() {
+    return this.value;
+  }
+}

README.md

@@ -488,6 +488,7 @@
 2722|[Join Two Arrays by ID](./2722-join-two-arrays-by-id.js)|Medium|
 2723|[Add Two Promises](./2723-add-two-promises.js)|Easy|
 2724|[Sort By](./2724-sort-by.js)|Easy|
+2726|[Calculator with Method Chaining](./2726-calculator-with-method-chaining.js)|Easy|
 2727|[Is Object Empty](./2727-is-object-empty.js)|Easy|
 3042|[Count Prefix and Suffix Pairs I](./3042-count-prefix-and-suffix-pairs-i.js)|Easy|
 3110|[Score of a String](./3110-score-of-a-string.js)|Easy|