Commit5970bc2

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Add solution for problem 1146 (fishercoder1534#128)

* Add solution for problem 1146 in Javascript* Add js file

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`@@ -1061,6 +1061,7 @@ _If you like this project, please leave me a star._ ★`
`1061`	`1061`	`\|1179\|[Reformat Department Table](https://leetcode.com/problems/reformat-department-table/)\|[Solution](../master/database/_1179.sql)\|\| Easy\|`
`1062`	`1062`	`\|1173\|[Immediate Food Delivery I](https://leetcode.com/problems/immediate-food-delivery-i/)\|[Solution](../master/database/_1173.sql)\|\| Easy\|`
`1063`	`1063`	`\|1148\|[Article Views I](https://leetcode.com/problems/article-views-i/)\|[Solution](../master/database/_1148.sql)\|\| Easy\|`
	`1064`	`+\|1146\|[Snapshot Array](https://leetcode.com/problems/snapshot-array/)\|[Javascript](./javascript/_1146.js)\|\| Easy\|`
`1064`	`1065`	`\|1141\|[User Activity for the Past 30 Days I](https://leetcode.com/problems/user-activity-for-the-past-30-days-i/)\|[Solution](../master/database/_1141.sql)\|\| Easy\|`
`1065`	`1066`	`\|1084\|[Sales Analysis III](https://leetcode.com/problems/sales-analysis-iii/)\|[Solution](../master/database/_1084.sql)\|\| Easy\|`
`1066`	`1067`	`\|1083\|[Sales Analysis II](https://leetcode.com/problems/sales-analysis-ii/)\|[Solution](../master/database/_1083.sql)\|\| Easy\|`

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	`1`	`+/**`
	`2`	`+ * Author: Phuong Lam`
	`3`	`+ */`
	`4`	`+`
	`5`	`+/**`
	`6`	`+ *@param {number} length`
	`7`	`+ */`
	`8`	`+varSnapshotArray=function(length){`
	`9`	`+this.changes={}`
	`10`	`+this.snapShots=[]`
	`11`	`+}`
	`12`	`+`
	`13`	`+/**`
	`14`	`+ *@param {number} index`
	`15`	`+ *@param {number} val`
	`16`	`+ *@return {void}`
	`17`	`+ */`
	`18`	`+SnapshotArray.prototype.set=function(index,val){`
	`19`	`+this.changes[index]=val`
	`20`	`+}`
	`21`	`+`
	`22`	`+/**`
	`23`	`+ *@return {number}`
	`24`	`+ */`
	`25`	`+SnapshotArray.prototype.snap=function(){`
	`26`	`+this.snapShots.push(this.changes)`
	`27`	`+this.changes={}`
	`28`	`+returnthis.snapShots.length-1`
	`29`	`+}`
	`30`	`+`
	`31`	`+/**`
	`32`	`+ *@param {number} index`
	`33`	`+ *@param {number} snap_id`
	`34`	`+ *@return {number}`
	`35`	`+ */`
	`36`	`+SnapshotArray.prototype.get=function(index,snap_id){`
	`37`	`+while(snap_id>=0&&this.snapShots[snap_id][index]===undefined)snap_id--`
	`38`	`+if(snap_id>=0)returnthis.snapShots[snap_id][index]`
	`39`	`+return0`
	`40`	`+}`
	`41`	`+`
	`42`	`+/**`
	`43`	`+ * Your SnapshotArray object will be instantiated and called as such:`
	`44`	`+ * var obj = new SnapshotArray(length)`
	`45`	`+ * obj.set(index,val)`
	`46`	`+ * var param_2 = obj.snap()`
	`47`	`+ * var param_3 = obj.get(index,snap_id)`
	`48`	`+ */`

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