Interview Questions asked in Oracle

Search In A Sorted Array EASY

Given a sorted array of integers, check if given key is present in it?

Two Sum EASY

Given an unsorted integer array, find a pair with the given sum in it.

Reverse A Linked List EASY

Given a linked list, reverse the direction of nodes in the list.

Linked List Recursion
Detect And Remove Loop From A Linked List MEDIUM

Given a linked list, check if it has a loop. If yes, remove the loop.

Linked List
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Longest Subarray With Zero Sum MEDIUM

Given an array of integers, find the length of the longest subarray whose sum is 0.

Array Binary Search
Connect Siblings In Binary Tree MEDIUM

Given a binary tree, connect the sibling nodes at each level.

Binary Tree Queue
Construct Binary Tree From Its PreOrder And InOrder MEDIUM

Given pre-order & in-order traversal of a binary tree, construct the tree.

Binary Tree Recursion
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Print Cousins In Binary Tree MEDIUM

Given a binary tree, print the cousins of the given node.

Binary Tree Recursion
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Search In A Rotated Sorted Array MEDIUM

Given a sorted array of integers rotated k times, check if given key is present in it?

Array Binary Search
Largest K Integers From Stream Of Integers HARD

Given a stream of integers, find the largest K integers.

Heap Sorting

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