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Leetcode Problem 961. N-Repeated Element in Size 2N Array
961. N-Repeated Element in Size 2N Array
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Leetcode Solutions
Approach: Compare Neighboring Elements
Solution Idea
Algorithm Steps
Code Implementation
Complexity Analysis
Iterate through the array
nums
.
For each element
nums[i]
, compare it with the next three elements
nums[i+1]
,
nums[i+2]
, and
nums[i+3]
.
If any of these comparisons show that
nums[i]
is equal to one of these elements, return
nums[i]
as the repeated element.
If no repeated elements are found in the above steps, the repeated element must be at the last position, so return
nums[nums.length - 1]
.
Approach: Count Elements Using a HashMap
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