leetcode-problemset/leetcode/originData/count-the-digits-that-divide-a-number.json

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            "title": "Count the Digits That Divide a Number",
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            "content": "<p>Given an integer <code>num</code>, return <em>the number of digits in <code>num</code> that divide </em><code>num</code>.</p>\n\n<p>An integer <code>val</code> divides <code>nums</code> if <code>nums % val == 0</code>.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> num = 7\n<strong>Output:</strong> 1\n<strong>Explanation:</strong> 7 divides itself, hence the answer is 1.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> num = 121\n<strong>Output:</strong> 2\n<strong>Explanation:</strong> 121 is divisible by 1, but not 2. Since 1 occurs twice as a digit, we return 2.\n</pre>\n\n<p><strong>Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> num = 1248\n<strong>Output:</strong> 4\n<strong>Explanation:</strong> 1248 is divisible by all of its digits, hence the answer is 4.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= num &lt;= 10<sup>9</sup></code></li>\n\t<li><code>num</code> does not contain <code>0</code> as one of its digits.</li>\n</ul>\n",
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                    "code": "class Solution {\npublic:\n    int countDigits(int num) {\n        \n    }\n};",
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                    "code": "class Solution {\n    public int countDigits(int num) {\n        \n    }\n}",
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                    "code": "class Solution(object):\n    def countDigits(self, num):\n        \"\"\"\n        :type num: int\n        :rtype: int\n        \"\"\"\n        ",
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                    "code": "class Solution:\n    def countDigits(self, num: int) -> int:\n        ",
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                    "code": "int countDigits(int num) {\n    \n}",
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                    "code": "public class Solution {\n    public int CountDigits(int num) {\n        \n    }\n}",
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                    "code": "/**\n * @param {number} num\n * @return {number}\n */\nvar countDigits = function(num) {\n    \n};",
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                    "code": "function countDigits(num: number): number {\n    \n};",
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                    "code": "class Solution {\n\n    /**\n     * @param Integer $num\n     * @return Integer\n     */\n    function countDigits($num) {\n        \n    }\n}",
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                    "code": "class Solution {\n    func countDigits(_ num: Int) -> Int {\n        \n    }\n}",
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                    "lang": "Go",
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                    "code": "func countDigits(num int) int {\n    \n}",
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                    "lang": "Ruby",
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                    "code": "# @param {Integer} num\n# @return {Integer}\ndef count_digits(num)\n    \nend",
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                    "code": "object Solution {\n    def countDigits(num: Int): Int = {\n        \n    }\n}",
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                    "lang": "Rust",
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                    "code": "impl Solution {\n    pub fn count_digits(num: i32) -> i32 {\n        \n    }\n}",
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                    "lang": "Racket",
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                    "code": "(define/contract (count-digits num)\n  (-> exact-integer? exact-integer?)\n  )",
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                    "lang": "Erlang",
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            "hints": [
                "Use mod by 10 to retrieve the least significant digit of the number",
                "Divide the number by 10, then round it down so that the second least significant digit becomes the least significant digit of the number",
                "Use your language’s mod operator to see if a number is a divisor of another."
            ],
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