How to Solve Bitwise O Rs of Subarrays Problem
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Bitwise ORs of Subarrays
Given an integer array arr, return the number of distinct bitwise ORs of all the non-empty subarrays of arr. The bitwise OR of a subarray is the bitwise OR of each integer in the subarray. The bitwise...
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Understanding the Bitwise O Rs of Subarrays Problem
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Problem Statement
Given an integer array arr, return the number of distinct bitwise ORs of all the non-empty subarrays of arr. The bitwise OR of a subarray is the bitwise OR of each integer in the subarray. The bitwise OR of a subarray of one integer is that integer. A subarray is a contiguous non-empty sequence of elements within an array.
Bitwise ORs of Subarrays
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Examples
arr = [0]1There is only one possible result: 0.
arr = [1,1,2]3The possible subarrays are [1], [1], [2], [1, 1], [1, 2], [1, 1, 2]. These yield the results 1, 1, 2, 1, 3, 3. There are 3 unique values, so the answer is 3.
arr = [1,2,4]6The possible results are 1, 2, 3, 4, 6, and 7.
Constraints
1 <= arr.length <= 5 * 1040 <= arr[i] <= 109How Interview Coder Helps with Leetcode Problems
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