Oracle Topics for Interview Preparation

Last Updated : 23 Jul, 2025

Table of Content

Easy Level

  1. Binary Search
  2. Check if a number is Palindrome
  3. Heap Sort
  4. Merge Sort
  5. Print the string after the specified character has occurred given no. of times
  6. Program for Armstrong Numbers
  7. Queue | Set 2 (Linked List Implementation)
  8. Write one line C function to find whether a no is power of two
  9. Check for balanced parentheses in an expression
  10. Diameter of a Binary Tree
  11. Dynamic Programming | Set 10 ( 0-1 Knapsack Problem)
  12. Find the first repeating element in an array of integers
  13. Find minimum number of coins that make a given value
  14. Find profession in a special family
  15. Implement Stack using Queues
  16. Merge two sorted linked lists
  17. Print a given matrix in spiral form
  18. Print all Jumping Numbers smaller than or equal to a given value
  19. Implement Queue using Stacks
  20. Remove duplicates from a sorted linked list
  21. Root to leaf path sum equal to a given number
  22. Search in a row wise and column wise sorted matrix
  23. Searching for Patterns | Set 2 (KMP Algorithm)
  24. Stock Buy Sell to Maximize Profit

Medium Level

  1. Connect nodes at same level
  2. Program to convert a given number to words
  3. Detect and Remove Loop in a Linked List
  4. Detect Cycle in a Directed Graph
  5. Detect cycle in an undirected graph
  6. Dynamic Programming | Set 11 (Egg Dropping Puzzle)
  7. Largest Sum Contiguous Subarray

Hard Level

  1. AVL Tree | Set 1 (Insertion)
  2. AVL Tree | Set 2 (Deletion)
  3. Backtracking | Set 7 (Sudoku)
  4. Median in a stream of integers (running integers)
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