update arraymethod and ieteratbles
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		| @@ -53,3 +53,6 @@ console.log(arr_s); | ||||
| console.log(arr_s[0]); | ||||
| console.log(arr_s[1]); | ||||
| console.log(arr_s.length); | ||||
|  | ||||
|  | ||||
|  | ||||
|   | ||||
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