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Commit0298884

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update: 164 & 287
1 parent85eedb0 commit0298884

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‎README.md

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@@ -58,6 +58,7 @@ This is the solutions collection of my LeetCode submissions, most of them are pr
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|137|[Single Number II](https://leetcode.com/problems/single-number-ii/)|[JavaScript](./src/single-number-ii/res.js)|Medium|
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|151|[Reverse Words in a String](https://leetcode.com/problems/reverse-words-in-a-string/)|[JavaScript](./src/reverse-words-in-a-string/res.js)|Medium|
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|152|[Maximum Product Subarray](https://leetcode.com/problems/maximum-product-subarray/)|[JavaScript](./src/maximum-product-subarray/res.js)|Medium|
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|164|[Maximum Gap](https://leetcode.com/problems/maximum-gap/)|[JavaScript](./src/maximum-gap/res.js)|Hard|
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|165|[Compare Version Numbers](https://leetcode.com/problems/compare-version-numbers/)|[JavaScript](./src/compare-version-numbers/res.js)|Medium|
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|175|[Combine Two Tables](https://leetcode.com/problems/combine-two-tables/)|[SQL](./src/combine-two-tables/res.txt)|Easy|
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|176|[Second Highest Salary](https://leetcode.com/problems/second-highest-salary/)|[SQL](./src/second-highest-salary/res.txt)|Easy|
@@ -80,6 +81,7 @@ This is the solutions collection of my LeetCode submissions, most of them are pr
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|240|[Search a 2D Matrix II](https://leetcode.com/problems/search-a-2d-matrix-ii/)|[JavaScript](./src/search-a-2d-matrix-ii/res.js)|Medium|
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|274|[H-Index](https://leetcode.com/problems/h-index/)|[JavaScript](./src/h-index/res.js)|Medium|
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|275|[H-Index II](https://leetcode.com/problems/h-index-ii/)|[JavaScript](./src/h-index-ii/res.js)|Medium|
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|287|[Find the Duplicate Number](https://leetcode.com/problems/find-the-duplicate-number/)|[JavaScript](./src/find-the-duplicate-number/res.js)|Medium|
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|299|[Bulls and Cows](https://leetcode.com/problems/bulls-and-cows/)|[JavaScript](./src/bulls-and-cows/res.js)|Medium|
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|307|[Range Sum Query - Mutable](https://leetcode.com/problems/range-sum-query-mutable/)|[JavaScript](./src/range-sum-query-mutable/res.js)|Medium|
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|309|[Best Time to Buy and Sell Stock with Cooldown](https://leetcode.com/problems/best-time-to-buy-and-sell-stock-with-cooldown/)|[JavaScript](./src/best-time-to-buy-and-sell-stock-with-cooldown/res.js)|Medium|

‎src/find-the-duplicate-number/res.js

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/**
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* Floyd判圈算法
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*@param {number[]} nums
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*@return {number}
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*/
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varfindDuplicate=function(nums){
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lettortoise=nums[0];
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lethare=nums[0];
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do{
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tortoise=nums[tortoise];
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hare=nums[nums[hare]];
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}while(tortoise!==hare);
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hare=nums[0]
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while(tortoise!==hare){
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hare=nums[hare]
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tortoise=nums[tortoise]
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}
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returntortoise;
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};

‎src/maximum-gap/res.js

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/**
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* https://leetcode-cn.com/problems/maximum-gap/solution/zui-da-jian-ju-by-leetcode/
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*@param {number[]} nums
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*@return {number}
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*/
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varmaximumGap=function(nums){
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constlen=nums.length;
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if(len<2)return0;
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letmini=Number.MAX_SAFE_INTEGER,
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maxi=Number.MIN_SAFE_INTEGER;
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nums.forEach(e=>{
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if(e<mini){
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mini=e;
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}
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if(e>maxi){
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maxi=e;
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}
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})
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letbucketSize=Math.max(1,(maxi-mini)/(nums.length-1));// bucket size or capacity
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letbucketNum=parseInt((maxi-mini)/bucketSize)+1;// number of buckets
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constbuckets=[];
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for(letindex=0;index<bucketNum;index++){
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buckets.push({});
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}
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// console.log(buckets);
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nums.forEach(num=>{
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letbucketIdx=parseInt((num-mini)/bucketSize);// locating correct bucket
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// console.log('bucketIdx is ', bucketIdx);
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buckets[bucketIdx].used=true;
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buckets[bucketIdx].minval=Math.min(num,buckets[bucketIdx].minval||Number.MAX_SAFE_INTEGER);
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buckets[bucketIdx].maxval=Math.max(num,buckets[bucketIdx].maxval||Number.MIN_SAFE_INTEGER);
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});
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letprevBucketMax=mini,maxGap=0;
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buckets.forEach(bucket=>{
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if(bucket.used){
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maxGap=Math.max(maxGap,bucket.minval-prevBucketMax);
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prevBucketMax=bucket.maxval;
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}
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});
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returnmaxGap;
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};

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