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Commit 70bc41c

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update: 53
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‎README.md

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@@ -40,7 +40,7 @@ This is the solutions collection of my LeetCode submissions, most of them are pr
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| 46 | [Permutations](https://leetcode.com/problems/permutations/) | [JavaScript](./src/permutations/res.js) | Medium |
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| 48 | [Rotate Image](https://leetcode.com/problems/rotate-image/) | [JavaScript](./src/rotate-image/res.js) | Medium |
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| 49 | [Group Anagrams](https://leetcode.com/problems/anagrams/) | [JavaScript](./src/anagrams/res.js) | Medium |
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| 53 | [Maximum Subarray](https://leetcode.com/problems/maximum-subarray/) | [JavaScript](./src/maximum-subarray/res.js) | Easy |
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| 53 | [Maximum Subarray](https://leetcode.com/problems/maximum-subarray/) | [JavaScript](./src/maximum-subarray/res.js) · [TypeScript](./src/maximum-subarray/res.ts) | Easy |
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| 54 | [Spiral Matrix](https://leetcode.com/problems/spiral-matrix/) | [JavaScript](./src/spiral-matrix/res.js) | Medium |
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| 55 | [Jump Game](https://leetcode.com/problems/jump-game/) <sup>*</sup> | [JavaScript](./src/jump-game/res.js) | Medium |
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| 56 | [Merge Intervals](https://leetcode.com/problems/merge-intervals/) | [JavaScript](./src/merge-intervals/res.js) | Medium |

‎src/maximum-subarray/res.ts

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function maxSubArray(nums: number[]): number {
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if (nums.length === 0) {
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return 0;
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}
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if (nums.length === 1) {
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return nums[0];
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}
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const maxI = [nums[0]];
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nums.forEach((num, i) => {
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if (!i) {
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return ;
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}
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maxI[i] = Math.max(maxI[i-1]+num, num);
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})
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return Math.max(...maxI);
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};
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function Status(lSum: number, rSum: number, mSum: number, iSum: number) {
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return {
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lSum,
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rSum,
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mSum,
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iSum,
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};
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}
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function getSum(nums: number[], start: number, end: number) {
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if (start === end) {
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return Status(nums[start], nums[start], nums[start], nums[start]);
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}
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const mIndex = Math.floor((start + end) / 2);
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const leftSum = getSum(nums, start, mIndex);
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const rightSum = getSum(nums, mIndex+1, end);
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return Status(
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Math.max(leftSum.lSum, leftSum.iSum + rightSum.lSum),
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Math.max(rightSum.rSum, rightSum.iSum + leftSum.rSum),
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Math.max(leftSum.mSum, rightSum.mSum, leftSum.rSum + rightSum.lSum),
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leftSum.iSum+rightSum.iSum
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)
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}
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/**
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* 线段树
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* @param nums
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*/
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function maxSubArray2(nums: number[]): number {
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return getSum(nums, 0, nums.length-1).mSum;
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};

‎src/minimum-depth-of-binary-tree/res.ts

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@@ -16,7 +16,7 @@ function minDepth(root: TreeNode | null): number {
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if (!root) {
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return 0;
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}
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if (!root.left && !root.right) {
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return 1;
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}

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