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Check If N and Its Double Exist
Given an array arr of integers, check if there exist two indices i and j such that :
Given an array arr of integers, check if there exist two indices i and j such that :
Example 1
Input: arr = [10,2,5,3]
Output: true
Explanation: For i = 0 and j = 2, arr[i] == 10 == 2 * 5 == 2 * arr[j]
Example 2
Input: arr = [3,1,7,11]
Output: false
Explanation: There is no i and j that satisfy the conditions.
Constraints
- 2 <= arr.length <= 500
- -10^3 <= arr[i] <= 10^3
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