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The complexity of this solution is O(n) because you are only going through the array one time, but it also has a space complexity of O(n) because of the HashSet data structure, which contains your ...
// Given an integer array of size 2N + 1. In this given array, N numbers are present twice and one number is present only once in the array. // You need to find and return that number which is unique ...
Remove duplicates with Java’s Stream API. The fastest and most efficient way to remove items from a List in Java is to use the distinct method of the Stream API. The following code snippet starts with ...
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