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Copy file name to clipboardexpand all lines: solution/0200-0299/0297.Serialize and Deserialize Binary Tree/README_EN.md
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<p>Design an algorithm to serialize and deserialize a binary tree. There is no restriction on how your serialization/deserialization algorithm should work. You just need to ensure that a binary tree can be serialized to a string and this string can be deserialized to the original tree structure.</p>
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<p><strong>Clarification:</strong> The input/output format is the same as <ahref="https://support.leetcode.com/hc/en-us/articles/360011883654-What-does-1-null-2-3-mean-in-binary-tree-representation-"target="_blank">how LeetCode serializes a binary tree</a>. You do not necessarily need to follow this format, so please be creative and come up with different approaches yourself.</p>
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<p><strong>Clarification:</strong> The input/output format is the same as <ahref="https://support.leetcode.com/hc/en-us/articles/32442719377939-How-to-create-test-cases-on-LeetCode#h_01J5EGREAW3NAEJ14XC07GRW1A"target="_blank">how LeetCode serializes a binary tree</a>. You do not necessarily need to follow this format, so please be creative and come up with different approaches yourself.</p>
Copy file name to clipboardexpand all lines: solution/0500-0599/0594.Longest Harmonious Subsequence/README_EN.md
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<p>We define a harmonious array as an array where the difference between its maximum value and its minimum value is <b>exactly</b> <code>1</code>.</p>
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<p>Given an integer array <code>nums</code>, return <em>the length of its longest harmonious subsequence among all its possible subsequences</em>.</p>
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<p>A <strong>subsequence</strong> of array is a sequence that can be derived from the array by deleting some or no elements without changing the order of the remaining elements.</p>
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<p>Given an integer array <code>nums</code>, return the length of its longest harmonious <spandata-keyword="subsequence-array">subsequence</span> among all its possible subsequences.</p>
Copy file name to clipboardexpand all lines: solution/1400-1499/1470.Shuffle the Array/README_EN.md
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<strong>Input:</strong> nums = [2,5,1,3,4,7], n = 3
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<strong>Output:</strong> [2,3,5,4,1,7]
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<strong>Output:</strong> [2,3,5,4,1,7]
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<strong>Explanation:</strong> Since x<sub>1</sub>=2, x<sub>2</sub>=5, x<sub>3</sub>=1, y<sub>1</sub>=3, y<sub>2</sub>=4, y<sub>3</sub>=7 then the answer is [2,3,5,4,1,7].
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