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2620. Counter

Easy

Given an integer n, return a counter function. This counter function initially returns n and then returns 1 more than the previous value every subsequent time it is called (n, n + 1, n + 2, etc).

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Example 1:

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+Input: 
+n = 10 
+["call","call","call"]
+Output: [10,11,12]
+Explanation: 
+counter() = 10 // The first time counter() is called, it returns n.
+counter() = 11 // Returns 1 more than the previous time.
+counter() = 12 // Returns 1 more than the previous time.
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Example 2:

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+Input: 
+n = -2
+["call","call","call","call","call"]
+Output: [-2,-1,0,1,2]
+Explanation: counter() initially returns -2. Then increases after each sebsequent call.
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Constraints:

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