How to Solve Maximum Strong Pair X O R I I Problem
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Maximum Strong Pair XOR II
You are given a 0-indexed integer array nums. A pair of integers x and y is called a strong pair if it satisfies the condition: |x - y| <= min(x, y) You need to select two integers from nums such that...
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Understanding the Maximum Strong Pair X O R I I Problem
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Problem Statement
You are given a 0-indexed integer array nums. A pair of integers x and y is called a strong pair if it satisfies the condition: |x - y| <= min(x, y) You need to select two integers from nums such that they form a strong pair and their bitwise XOR is the maximum among all strong pairs in the array. Return the maximum XOR value out of all possible strong pairs in the array nums. Note that you can pick the same integer twice to form a pair.
Maximum Strong Pair XOR II
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Examples
nums = [1,2,3,4,5]7There are 11 strong pairs in the array nums: (1, 1), (1, 2), (2, 2), (2, 3), (2, 4), (3, 3), (3, 4), (3, 5), (4, 4), (4, 5) and (5, 5). The maximum XOR possible from these pairs is 3 XOR 4 = 7.
nums = [10,100]0There are 2 strong pairs in the array nums: (10, 10) and (100, 100). The maximum XOR possible from these pairs is 10 XOR 10 = 0 since the pair (100, 100) also gives 100 XOR 100 = 0.
nums = [500,520,2500,3000]1020There are 6 strong pairs in the array nums: (500, 500), (500, 520), (520, 520), (2500, 2500), (2500, 3000) and (3000, 3000). The maximum XOR possible from these pairs is 500 XOR 520 = 1020 since the only other non-zero XOR value is 2500 XOR 3000 = 636.
Constraints
1 <= nums.length <= 5 * 1041 <= nums[i] <= 220 - 1How Interview Coder Helps with Leetcode Problems
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