Write a C++ program that takes a symmetric matrix from the user, stores it as a 1D array in a memory effective way, then asks the user to enter the index and returns the element but using this 1D array

Write a C++ program that takes a symmetric matrix from the user, stores it as a 1D array in a memory effective way, then asks the user to enter the index and returns the element but using this 1D array

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Concept explainers

Randomized Select Algorithm

A randomized algorithm is defined as one that uses a certain amount of randomization in its logic or operation. It is said to be an algorithm that depends on the random number to perform its operation. It is used for reducing the overall time complexity, space complexity in the standard algorithm. The randomized algorithm uses the concept of random numbers to find the solutions to the different kinds of problems and also to improve the problem solutions.

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need help in c++

Write a C++ program that takes a symmetric matrix from the user, stores it as a 1D array in a memory effective way,
then asks the user to enter the index and returns the element but using this 1D array

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