An array having 100 elements have numbers from 1 to 99 randomly out of which any number is repeated. Find the repeated number in minimum time and space complexity.

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Can we store null in arraylist?

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List out the applications of a linked list?

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How can you insert a node at the end of linked list?

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Write the recursive c function to count the number of nodes present in a binary tree.

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What is the bucket size, when the overlapping and collision occur at same time?

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How is any data structure application is classified among files?

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Are collections thread safe?

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Can a tree be empty?

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Given an array of integers, devise a program to replace every element with the next greatest element on the right side in the array. Also, replace the last element with 5 as there no element on the right side of it.

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What is sorting explain?

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What are scalar values?

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