Numbers At Most N Given Digit Set
<p>Given an array of <code>digits</code> which is sorted in <strong>non-decreasing</strong> order. You can write numbers using each <code>digits[i]</code> as many times as we want. For example, if <code>digits = [&#39;1&#39;,&#39;3&#39;,&#39;5&#39;]</code>, we may write numbers such as <code>&#39;13&#39;</code>, <code>&#39;551&#39;</code>, and <code>&#39;1351315&#39;</code>.</p>

<p>Return <em>the number of positive integers that can be generated </em>that are less than or equal to a given integer <code>n</code>.</p>

<p>&nbsp;</p>
<p><strong class="example">Example 1:</strong></p>

<pre>
<strong>Input:</strong> digits = [&quot;1&quot;,&quot;3&quot;,&quot;5&quot;,&quot;7&quot;], n = 100
<strong>Output:</strong> 20
<strong>Explanation: </strong>
The 20 numbers that can be written are:
1, 3, 5, 7, 11, 13, 15, 17, 31, 33, 35, 37, 51, 53, 55, 57, 71, 73, 75, 77.
</pre>

<p><strong class="example">Example 2:</strong></p>

<pre>
<strong>Input:</strong> digits = [&quot;1&quot;,&quot;4&quot;,&quot;9&quot;], n = 1000000000
<strong>Output:</strong> 29523
<strong>Explanation: </strong>
We can write 3 one digit numbers, 9 two digit numbers, 27 three digit numbers,
81 four digit numbers, 243 five digit numbers, 729 six digit numbers,
2187 seven digit numbers, 6561 eight digit numbers, and 19683 nine digit numbers.
In total, this is 29523 integers that can be written using the digits array.
</pre>

<p><strong class="example">Example 3:</strong></p>

<pre>
<strong>Input:</strong> digits = [&quot;7&quot;], n = 8
<strong>Output:</strong> 1
</pre>

<p>&nbsp;</p>
<p><strong>Constraints:</strong></p>

<ul>
	<li><code>1 &lt;= digits.length &lt;= 9</code></li>
	<li><code>digits[i].length == 1</code></li>
	<li><code>digits[i]</code> is a digit from&nbsp;<code>&#39;1&#39;</code>&nbsp;to <code>&#39;9&#39;</code>.</li>
	<li>All the values in&nbsp;<code>digits</code> are <strong>unique</strong>.</li>
	<li><code>digits</code> is sorted in&nbsp;<strong>non-decreasing</strong> order.</li>
	<li><code>1 &lt;= n &lt;= 10<sup>9</sup></code></li>
</ul>

[]
[]
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n    int atMostNGivenDigitSet(vector<string>& digits, int n) {\n        \n    }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n    public int atMostNGivenDigitSet(String[] digits, int n) {\n        \n    }\n}"}, {"value": "python", "text": "Python", "defaultCode": "class Solution(object):\n    def atMostNGivenDigitSet(self, digits, n):\n        \"\"\"\n        :type digits: List[str]\n        :type n: int\n        :rtype: int\n        \"\"\"\n        "}, {"value": "python3", "text": "Python3", "defaultCode": "class Solution:\n    def atMostNGivenDigitSet(self, digits: List[str], n: int) -> int:\n        "}, {"value": "c", "text": "C", "defaultCode": "int atMostNGivenDigitSet(char** digits, int digitsSize, int n) {\n    \n}"}, {"value": "csharp", "text": "C#", "defaultCode": "public class Solution {\n    public int AtMostNGivenDigitSet(string[] digits, int n) {\n        \n    }\n}"}, {"value": "javascript", "text": "JavaScript", "defaultCode": "/**\n * @param {string[]} digits\n * @param {number} n\n * @return {number}\n */\nvar atMostNGivenDigitSet = function(digits, n) {\n    \n};"}, {"value": "typescript", "text": "TypeScript", "defaultCode": "function atMostNGivenDigitSet(digits: string[], n: number): number {\n    \n};"}, {"value": "php", "text": "PHP", "defaultCode": "class Solution {\n\n    /**\n     * @param String[] $digits\n     * @param Integer $n\n     * @return Integer\n     */\n    function atMostNGivenDigitSet($digits, $n) {\n        \n    }\n}"}, {"value": "swift", "text": "Swift", "defaultCode": "class Solution {\n    func atMostNGivenDigitSet(_ digits: [String], _ n: Int) -> Int {\n        \n    }\n}"}, {"value": "kotlin", "text": "Kotlin", "defaultCode": "class Solution {\n    fun atMostNGivenDigitSet(digits: Array<String>, n: Int): Int {\n        \n    }\n}"}, {"value": "dart", "text": "Dart", "defaultCode": "class Solution {\n  int atMostNGivenDigitSet(List<String> digits, int n) {\n    \n  }\n}"}, {"value": "golang", "text": "Go", "defaultCode": "func atMostNGivenDigitSet(digits []string, n int) int {\n    \n}"}, {"value": "ruby", "text": "Ruby", "defaultCode": "# @param {String[]} digits\n# @param {Integer} n\n# @return {Integer}\ndef at_most_n_given_digit_set(digits, n)\n    \nend"}, {"value": "scala", "text": "Scala", "defaultCode": "object Solution {\n    def atMostNGivenDigitSet(digits: Array[String], n: Int): Int = {\n        \n    }\n}"}, {"value": "rust", "text": "Rust", "defaultCode": "impl Solution {\n    pub fn at_most_n_given_digit_set(digits: Vec<String>, n: i32) -> i32 {\n        \n    }\n}"}, {"value": "racket", "text": "Racket", "defaultCode": "(define/contract (at-most-n-given-digit-set digits n)\n  (-> (listof string?) exact-integer? exact-integer?)\n  )"}, {"value": "erlang", "text": "Erlang", "defaultCode": "-spec at_most_n_given_digit_set(Digits :: [unicode:unicode_binary()], N :: integer()) -> integer().\nat_most_n_given_digit_set(Digits, N) ->\n  ."}, {"value": "elixir", "text": "Elixir", "defaultCode": "defmodule Solution do\n  @spec at_most_n_given_digit_set(digits :: [String.t], n :: integer) :: integer\n  def at_most_n_given_digit_set(digits, n) do\n    \n  end\nend"}]
{
  "name": "atMostNGivenDigitSet",
  "params": [
    {
      "name": "digits",
      "type": "string[]"
    },
    {
      "name": "n",
      "type": "integer"
    }
  ],
  "return": {
    "type": "integer"
  }
}
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You may use package <a href=\"https://pub.dev/packages/collection/versions/1.18.0\" target=\"_blank\">collection</a></p>\r\n\r\n<p>Your code will be run directly without compiling</p>"]}
['Array', 'Math', 'String', 'Binary Search', 'Dynamic Programming']