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Commit9390bfd

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‎README.md

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@@ -60,6 +60,7 @@ This is the solutions collection of my LeetCode submissions, most of them are pr
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| 91|[Decode Ways](https://leetcode.com/problems/decode-ways/)|[JavaScript](./src/decode-ways/res.js)| Medium|
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| 93|[Restore IP Addresses](https://leetcode.com/problems/restore-ip-addresses/)|[JavaScript](./src/restore-ip-addresses/res.js)| Medium|
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| 94|[Binary Tree Inorder Traversal](https://leetcode.com/problems/binary-tree-inorder-traversal/)|[TypeScript](./src/binary-tree-inorder-traversal/res.ts)| Easy|
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| 96|[unique-binary-search-trees](https://leetcode.com/problems/unique-binary-search-trees/)|[TypeScript](./src/unique-binary-search-trees/res.ts)| Medium|
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| 98|[Validate Binary Search Tree](https://leetcode.com/problems/validate-binary-search-tree/)|[JavaScript](./src/validate-binary-search-tree/res.js)| Medium|
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| 100|[Same Tree](https://leetcode.com/problems/same-tree/)|[JavaScript](./src/same-tree/res.js)| Easy|
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| 101|[Symmetric Tree](https://leetcode.com/problems/symmetric-tree/)|[JavaScript](./src/symmetric-tree/res.js)| Easy|

‎src/unique-binary-search-trees/res.ts

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functionnumTrees(n:number):number{
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constcalculateCache=newArray(n+1).fill(0);
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calculateCache[0]=1;
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calculateCache[1]=1;
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for(leti=2;i<=n;i++){
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for(letj=0;j<=i-1;j++){
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calculateCache[i]+=calculateCache[i-j-1]*calculateCache[j];
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}
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}
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returncalculateCache[n];
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};

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