Fair Candy Swap
<p>Alice and Bob have a different total number of candies. You are given two integer arrays <code>aliceSizes</code> and <code>bobSizes</code> where <code>aliceSizes[i]</code> is the number of candies of the <code>i<sup>th</sup></code> box of candy that Alice has and <code>bobSizes[j]</code> is the number of candies of the <code>j<sup>th</sup></code> box of candy that Bob has.</p>

<p>Since they are friends, they would like to exchange one candy box each so that after the exchange, they both have the same total amount of candy. The total amount of candy a person has is the sum of the number of candies in each box they have.</p>

<p>Return a<em>n integer array </em><code>answer</code><em> where </em><code>answer[0]</code><em> is the number of candies in the box that Alice must exchange, and </em><code>answer[1]</code><em> is the number of candies in the box that Bob must exchange</em>. If there are multiple answers, you may <strong>return any</strong> one of them. It is guaranteed that at least one answer exists.</p>

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

<pre>
<strong>Input:</strong> aliceSizes = [1,1], bobSizes = [2,2]
<strong>Output:</strong> [1,2]
</pre>

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

<pre>
<strong>Input:</strong> aliceSizes = [1,2], bobSizes = [2,3]
<strong>Output:</strong> [1,2]
</pre>

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

<pre>
<strong>Input:</strong> aliceSizes = [2], bobSizes = [1,3]
<strong>Output:</strong> [2,3]
</pre>

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

<ul>
	<li><code>1 &lt;= aliceSizes.length, bobSizes.length &lt;= 10<sup>4</sup></code></li>
	<li><code>1 &lt;= aliceSizes[i], bobSizes[j] &lt;= 10<sup>5</sup></code></li>
	<li>Alice and Bob have a different total number of candies.</li>
	<li>There will be at least one valid answer for the given input.</li>
</ul>

[]
[]
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n    vector<int> fairCandySwap(vector<int>& aliceSizes, vector<int>& bobSizes) {\n        \n    }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n    public int[] fairCandySwap(int[] aliceSizes, int[] bobSizes) {\n        \n    }\n}"}, {"value": "python", "text": "Python", "defaultCode": "class Solution(object):\n    def fairCandySwap(self, aliceSizes, bobSizes):\n        \"\"\"\n        :type aliceSizes: List[int]\n        :type bobSizes: List[int]\n        :rtype: List[int]\n        \"\"\"\n        "}, {"value": "python3", "text": "Python3", "defaultCode": "class Solution:\n    def fairCandySwap(self, aliceSizes: List[int], bobSizes: List[int]) -> List[int]:\n        "}, {"value": "c", "text": "C", "defaultCode": "/**\n * Note: The returned array must be malloced, assume caller calls free().\n */\nint* fairCandySwap(int* aliceSizes, int aliceSizesSize, int* bobSizes, int bobSizesSize, int* returnSize) {\n    \n}"}, {"value": "csharp", "text": "C#", "defaultCode": "public class Solution {\n    public int[] FairCandySwap(int[] aliceSizes, int[] bobSizes) {\n        \n    }\n}"}, {"value": "javascript", "text": "JavaScript", "defaultCode": "/**\n * @param {number[]} aliceSizes\n * @param {number[]} bobSizes\n * @return {number[]}\n */\nvar fairCandySwap = function(aliceSizes, bobSizes) {\n    \n};"}, {"value": "typescript", "text": "TypeScript", "defaultCode": "function fairCandySwap(aliceSizes: number[], bobSizes: number[]): number[] {\n    \n};"}, {"value": "php", "text": "PHP", "defaultCode": "class Solution {\n\n    /**\n     * @param Integer[] $aliceSizes\n     * @param Integer[] $bobSizes\n     * @return Integer[]\n     */\n    function fairCandySwap($aliceSizes, $bobSizes) {\n        \n    }\n}"}, {"value": "swift", "text": "Swift", "defaultCode": "class Solution {\n    func fairCandySwap(_ aliceSizes: [Int], _ bobSizes: [Int]) -> [Int] {\n        \n    }\n}"}, {"value": "kotlin", "text": "Kotlin", "defaultCode": "class Solution {\n    fun fairCandySwap(aliceSizes: IntArray, bobSizes: IntArray): IntArray {\n        \n    }\n}"}, {"value": "dart", "text": "Dart", "defaultCode": "class Solution {\n  List<int> fairCandySwap(List<int> aliceSizes, List<int> bobSizes) {\n    \n  }\n}"}, {"value": "golang", "text": "Go", "defaultCode": "func fairCandySwap(aliceSizes []int, bobSizes []int) []int {\n    \n}"}, {"value": "ruby", "text": "Ruby", "defaultCode": "# @param {Integer[]} alice_sizes\n# @param {Integer[]} bob_sizes\n# @return {Integer[]}\ndef fair_candy_swap(alice_sizes, bob_sizes)\n    \nend"}, {"value": "scala", "text": "Scala", "defaultCode": "object Solution {\n    def fairCandySwap(aliceSizes: Array[Int], bobSizes: Array[Int]): Array[Int] = {\n        \n    }\n}"}, {"value": "rust", "text": "Rust", "defaultCode": "impl Solution {\n    pub fn fair_candy_swap(alice_sizes: Vec<i32>, bob_sizes: Vec<i32>) -> Vec<i32> {\n        \n    }\n}"}, {"value": "racket", "text": "Racket", "defaultCode": "(define/contract (fair-candy-swap aliceSizes bobSizes)\n  (-> (listof exact-integer?) (listof exact-integer?) (listof exact-integer?))\n  )"}, {"value": "erlang", "text": "Erlang", "defaultCode": "-spec fair_candy_swap(AliceSizes :: [integer()], BobSizes :: [integer()]) -> [integer()].\nfair_candy_swap(AliceSizes, BobSizes) ->\n  ."}, {"value": "elixir", "text": "Elixir", "defaultCode": "defmodule Solution do\n  @spec fair_candy_swap(alice_sizes :: [integer], bob_sizes :: [integer]) :: [integer]\n  def fair_candy_swap(alice_sizes, bob_sizes) do\n    \n  end\nend"}]
{
  "name": "fairCandySwap",
  "params": [
    {
      "name": "aliceSizes",
      "type": "integer[]"
    },
    {
      "name": "bobSizes",
      "type": "integer[]"
    }
  ],
  "return": {
    "type": "integer[]"
  }
}
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</p>\r\n\r\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\r\n\r\n<p>Most standard library headers are already included automatically for your convenience.</p>"], "java": ["Java", "<p><code>OpenJDK 21</code>. Using compile arguments: <code>--enable-preview --release 21</code></p>\r\n\r\n<p>Most standard library headers are already included automatically for your convenience.</p>\r\n<p>Includes <code>Pair</code> class from https://docs.oracle.com/javase/8/javafx/api/javafx/util/Pair.html.</p>"], "python": ["Python", "<p><code>Python 2.7.18</code>.</p>\r\n\r\n<p>Most libraries are already imported automatically for your convenience, such as <a href=\"https://docs.python.org/2/library/array.html\" target=\"_blank\">array</a>, <a href=\"https://docs.python.org/2/library/bisect.html\" target=\"_blank\">bisect</a>, <a href=\"https://docs.python.org/2/library/collections.html\" target=\"_blank\">collections</a>. If you need more libraries, you can import it yourself.</p>\r\n\r\n<p>For Map/TreeMap data structure, you may use <a href=\"http://www.grantjenks.com/docs/sortedcontainers/\" target=\"_blank\">sortedcontainers</a> library.</p>\r\n\r\n<p>Note that Python 2.7 <a href=\"https://www.python.org/dev/peps/pep-0373/\" target=\"_blank\">is not maintained anymore</a>. For the latest Python, please choose Python3 instead.</p>"], "c": ["C", "<p>Compiled with <code>gcc 14</code> using the gnu11 standard.</p>\r\n\r\n<p>Your code is compiled with level one optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\r\n\r\n<p>Most standard library headers are already included automatically for your convenience.</p>\r\n\r\n<p>For hash table operations, you may use <a href=\"https://troydhanson.github.io/uthash/\" target=\"_blank\">uthash</a>. \"uthash.h\" is included by default. Below are some examples:</p>\r\n\r\n<p><b>1. Adding an item to a hash.</b>\r\n<pre>\r\nstruct hash_entry {\r\n    int id;            /* we'll use this field as the key */\r\n    char name[10];\r\n    UT_hash_handle hh; /* makes this structure hashable */\r\n};\r\n\r\nstruct hash_entry *users = NULL;\r\n\r\nvoid add_user(struct hash_entry *s) {\r\n    HASH_ADD_INT(users, id, s);\r\n}\r\n</pre>\r\n</p>\r\n\r\n<p><b>2. Looking up an item in a hash:</b>\r\n<pre>\r\nstruct hash_entry *find_user(int user_id) {\r\n    struct hash_entry *s;\r\n    HASH_FIND_INT(users, &user_id, s);\r\n    return s;\r\n}\r\n</pre>\r\n</p>\r\n\r\n<p><b>3. 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If you need more libraries, you can import it yourself.</p>\r\n\r\n<p>For Map/TreeMap data structure, you may use <a href=\"http://www.grantjenks.com/docs/sortedcontainers/\" target=\"_blank\">sortedcontainers</a> library.</p>"], "scala": ["Scala", "<p><code>Scala 3.3.1</code>.</p>"], "kotlin": ["Kotlin", "<p><code>Kotlin 2.1.10</code>.</p>"], "rust": ["Rust", "<p><code>Rust 1.85.0</code>. Your code will be compiled with <code>opt-level</code> 2.</p>\r\n\r\n<p>Supports <a href=\"https://crates.io/crates/rand\" target=\"_blank\">rand v0.8</a> and <a href=\"https://crates.io/crates/regex\" target=\"_blank\">regex\u00a0v1</a> and <a href=\"https://crates.io/crates/itertools\" target=\"_blank\">itertools\u00a0v0.14</a> from crates.io</p>"], "php": ["PHP", "<p><code>PHP 8.2</code>.</p>\r\n<p>With bcmath module</p>"], "typescript": ["Typescript", "<p><code>TypeScript 5.7.3, Node.js 22.14.0</code>.</p>\r\n\r\n<p>Compile Options: <code>--alwaysStrict --strictBindCallApply --strictFunctionTypes --target ES2024</code></p>\r\n\r\n<p><a href=\"https://lodash.com\" target=\"_blank\">lodash.js</a> library is included by default.</p>\r\n\r\n<p>For Priority Queue / Queue data structures, you may use 6.3.2 version of <a href=\"https://github.com/datastructures-js/priority-queue/tree/v6.3.2\" target=\"_blank\">datastructures-js/priority-queue</a> and 4.2.3 version of <a href=\"https://github.com/datastructures-js/queue/tree/v4.2.3\" target=\"_blank\">datastructures-js/queue</a> and 1.0.4 version of <a href=\"https://github.com/datastructures-js/deque/tree/v1.0.4\" target=\"_blank\">datastructures-js/deque</a>.</p>"], "racket": ["Racket", "<p><a href=\"https://docs.racket-lang.org/guide/performance.html#%28tech._c%29\" target=\"_blank\">Racket CS</a> v8.15</p>\r\n\r\n<p>Using <code>#lang racket</code></p>\r\n\r\n<p>Required <code>data/gvector data/queue data/order data/heap</code> automatically for your convenience</p>"], "erlang": ["Erlang", "Erlang/OTP 26"], "elixir": ["Elixir", "Elixir 1.17 with Erlang/OTP 26"], "dart": ["Dart", "<p>Dart 3.2. 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', 'Hash Table', 'Binary Search', 'Sorting']