DSA · Theory

Find Minimum in Rotated Sorted Array

Theory

343/810

Find Minimum in Rotated Sorted Array

Find Minimum in Rotated Sorted Array is a DSA topic. In plain words you use it for names A→Z in the roll list. Don’t start with a slogan — start with that picture.

Smallest example: n log n vs n². Type it, run it, and say what you see. If you can do that from memory, you know Find Minimum in Rotated Sorted Array.

From the example next to this theory: Find Minimum in Rotated Sorted Array — arrays give O(1) index access; matrices are arrays of arrays.

Trap — unstable sort when equal keys matter. Fix that before you talk about advanced DSA.

Viva — what is Find Minimum in Rotated Sorted Array? Then show n log n vs n². Then name the trap.

Diagram

  index →  0    1    2
  array → [10,  20,  30]

Exam tip

What is Find Minimum in Rotated Sorted Array? Show this: n log n vs n². Trap: unstable sort when equal keys matter.

Example

arr = [10, 20, 30, 40]
print(arr[2], arr[-1])
matrix = [[1, 2], [3, 4]]
print(matrix[1][0])  # 3

Find Minimum in Rotated Sorted Array — arrays give O(1) index access; matrices are arrays of arrays.

Short notes

DefFind Minimum in Rotated Sorted Array — names A→Z in the roll list.
Rulen log n vs n²
Trapunstable sort when equal keys matter
Usethe roll list

DSA · Theory

Find Minimum in Rotated Sorted Array

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Theory

343/810

Find Minimum in Rotated Sorted Array

Find Minimum in Rotated Sorted Array is a DSA topic. In plain words you use it for names A→Z in the roll list. Don’t start with a slogan — start with that picture.

Smallest example: n log n vs n². Type it, run it, and say what you see. If you can do that from memory, you know Find Minimum in Rotated Sorted Array.

From the example next to this theory: Find Minimum in Rotated Sorted Array — arrays give O(1) index access; matrices are arrays of arrays.

Trap — unstable sort when equal keys matter. Fix that before you talk about advanced DSA.

Viva — what is Find Minimum in Rotated Sorted Array? Then show n log n vs n². Then name the trap.

Diagram

  index →  0    1    2
  array → [10,  20,  30]

Exam tip

What is Find Minimum in Rotated Sorted Array? Show this: n log n vs n². Trap: unstable sort when equal keys matter.

Example

arr = [10, 20, 30, 40]
print(arr[2], arr[-1])
matrix = [[1, 2], [3, 4]]
print(matrix[1][0])  # 3

Find Minimum in Rotated Sorted Array — arrays give O(1) index access; matrices are arrays of arrays.

Short notes

DefFind Minimum in Rotated Sorted Array — names A→Z in the roll list.
Rulen log n vs n²
Trapunstable sort when equal keys matter
Usethe roll list

Find Minimum in Rotated Sorted Array

Example

Short notes

Questions

Find Minimum in Rotated Sorted Array

Example

Short notes

Questions