Beginner
1. Arithmetic Progression2. Geometric Progression3. Harmonic Progression4. No of triangles 5. Area of Polygon6. Trailing Zeros7. Min Platforms 8. Trapping Rain 9. Jump numbers10. Segregation of 0’s and 1’s11. Two SUM12. Triplet sum 13. Diagonal Sum14. Addition of two matrixes15. Subtraction of two matrixes16. Multiplication of two matrixes17. Transpose of given array18. Spiral Matrix19. Most Frequent Element20. Majority Element 21. Max difference 22. Odd occurring23. Second Largest and Second Smallest24. Next greater number25. Count Unique Elements26. Common elements 27. Removing Duplicates28. Balanced Array29. Rotating Array by k times30. Reverse Array31. Wave Array32. Merge arrays 33. Constraint Sort34. Find element in Sorted rotated array35. Sub Array Sum36. Largest subarray of 0’s and 1’s 37. K-Sub Array38. Max subarray sum39. Contiguous Square SumFind element in Sorted rotated array
LEVEL:Beginner
Description
Given an array of integers and value k. Find the element in sorted rotated array.
Input Format
First line contains the size of the first array. Next line contains the m integers separated by the spaces. Next line contains the value k.
Output Format
Print the index position else print -1
5 30 40 50 10 20 10
3
9 5 6 7 8 9 10 1 2 3 30
-1
9 5 6 7 8 9 10 1 2 3 3
8
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Approach
Approach1: Linear Searching
Step-i) Iterate the array by checking every element is equal to it or not.
Step-ii) If it is equal to it, return it directly.
Step-iii) If not found, return -1.
Approach2: Binary Search
Step-i) This approach is to make it sorted by rotating and then applying binary search.
Step-ii) find the peak element, by traversing every element.
Step-iii) Note the index where it is, peak.
Step-iv) If the element is > pivot, Use binary search for the left array,
Step-v) If the element is < pivot, Use binary search for the right array.
Step-vi) Return the index of the output from BinarySearch.
TimeComplexity: O(n)
Space Complexity: O(n)
Note :
Let us know if you can come up with a better approach, mail us at support@theinquisitive.in Your approach will be reviewed and posted with credits to you.
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