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calculator-with-method-chaining.json

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        "question": {
            "questionId": "2863",
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            "title": "Calculator with Method Chaining",
            "titleSlug": "calculator-with-method-chaining",
            "content": "<p>Design a <code>Calculator</code> class. The class should provide the&nbsp;mathematical operations of&nbsp;addition, subtraction, multiplication, division, and exponentiation. It should also allow consecutive operations to be performed using method chaining.&nbsp;The <code>Calculator</code> class constructor should accept a number&nbsp;which serves as the&nbsp;initial value of <code>result</code>.</p>\n\n<p>Your <font face=\"monospace\"><code>Calculator</code>&nbsp;</font>class should have the following methods:</p>\n\n<ul>\n\t<li><code>add</code> - This method adds the given number <code>value</code> to the&nbsp;<code>result</code> and returns the updated <code>Calculator</code>.</li>\n\t<li><code>subtract</code> -&nbsp;This method subtracts the given number <code>value</code>&nbsp;from the&nbsp;<code>result</code> and returns the updated <code>Calculator</code>.</li>\n\t<li><code>multiply</code> -&nbsp;This method multiplies the <code>result</code>&nbsp; by the given number <code>value</code> and returns the updated <code>Calculator</code>.</li>\n\t<li><code>divide</code> -&nbsp;This method divides the <code>result</code> by the given number <code>value</code> and returns the updated <code>Calculator</code>. If the passed value is <code>0</code>, an error <code>&quot;Division by zero is not allowed&quot;</code> should be thrown.</li>\n\t<li><code>power</code> -&nbsp;This method raises the&nbsp;<code>result</code> to the power of the given number <code>value</code> and returns the updated <code>Calculator</code>.</li>\n\t<li><code>getResult</code> -&nbsp;This method returns the <code>result</code>.</li>\n</ul>\n\n<p>Solutions within&nbsp;<code>10<sup>-5</sup></code>&nbsp;of the actual result are considered correct.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> \nactions = [&quot;Calculator&quot;, &quot;add&quot;, &quot;subtract&quot;, &quot;getResult&quot;], \nvalues = [10, 5, 7]\n<strong>Output:</strong> 8\n<strong>Explanation:</strong> \nnew Calculator(10).add(5).subtract(7).getResult() // 10 + 5 - 7 = 8\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> \nactions = [&quot;Calculator&quot;, &quot;multiply&quot;, &quot;power&quot;, &quot;getResult&quot;], \nvalues = [2, 5, 2]\n<strong>Output:</strong> 100\n<strong>Explanation:</strong> \nnew Calculator(2).multiply(5).power(2).getResult() // (2 * 5) ^ 2 = 100\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> \nactions = [&quot;Calculator&quot;, &quot;divide&quot;, &quot;getResult&quot;], \nvalues = [20, 0]\n<strong>Output:</strong> &quot;Division by zero is not allowed&quot;\n<strong>Explanation:</strong> \nnew Calculator(20).divide(0).getResult() // 20 / 0 \n\nThe error should be thrown because we cannot divide by zero.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>actions</code> is a valid JSON array of strings</li>\n\t<li><code>values</code>&nbsp;is a valid JSON array of numbers</li>\n\t<li><code>2 &lt;= actions.length &lt;= 2 * 10<sup>4</sup></code></li>\n\t<li><code>1 &lt;= values.length &lt;= 2 * 10<sup>4</sup>&nbsp;- 1</code></li>\n\t<li><code>actions[i]</code> is one of &quot;Calculator&quot;, &quot;add&quot;, &quot;subtract&quot;, &quot;multiply&quot;, &quot;divide&quot;, &quot;power&quot;, and&nbsp;&quot;getResult&quot;</li>\n\t<li>First action is always &quot;Calculator&quot;</li>\n\t<li>Last action is always &quot;getResult&quot;</li>\n</ul>\n",
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                    "code": "class Calculator {\n  \n    /** \n     * @param {number} value\n     */\n\tconstructor(value) {\n\t\t\n\t}\n\n    /** \n     * @param {number} value\n     * @return {Calculator}\n     */\n\tadd(value){\n\t\t\n\t}\n\n    /** \n     * @param {number} value\n     * @return {Calculator}\n     */\n\tsubtract(value){\n\t\t\n\t}\n\n    /** \n     * @param {number} value\n     * @return {Calculator}\n     */  \n\tmultiply(value) {\n\t\t\n\t}\n\n    /** \n     * @param {number} value\n     * @return {Calculator}\n     */\n\tdivide(value) {\n\t\t\n\t}\n  \n    /** \n     * @param {number} value\n     * @return {Calculator}\n     */\n\tpower(value) {\n\t\t\n\t}\n    \n    /** \n     * @return {number}\n     */\n\tgetResult() {\n\t\t\n\t}\n}",
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                    "lang": "TypeScript",
                    "langSlug": "typescript",
                    "code": "class Calculator {\n    \n\tconstructor(value: number) {\n\t\t\n    }\n    \n\tadd(value: number): Calculator {\n\t\t\n\t}\n    \n\tsubtract(value: number): Calculator {\n\t\t\n\t}\n    \n\tmultiply(value: number): Calculator {\n\t\t\n\t}\n\n\tdivide(value: number): Calculator {\n\t\t\n\t}\n    \n\tpower(value: number): Calculator {\n\t\t\n\t}\n\n\tgetResult(): number {\n\t\t\n\t}\n}",
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            "sampleTestCase": "[\"Calculator\", \"add\", \"subtract\", \"getResult\"]\n[10, 5, 7]",
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