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How to find all duplicate elements in an array in Java?

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How to find all duplicate elements in an array in Java?
posted Nov 2, 2017 by anonymous

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+1 vote

Write a program to remove the duplicate elements in an array and print
Eg) Array Elements - 12, 34, 12, 45, 67, 89
O/P: 12,34,45,67,89

+2 votes

consider an example :
if an array is: 2 -1 2 4 6 -5
then maximum sum of contiguous array is 13, from index 0 to index 4
constraints: complexity must not be greater than O(n).

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Given an unordered array A of size n and integer x. What is the best complexity to find two elements in A whose sum is x?
Share the algo, its complexity and if possible C code.

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