Leetcode Problem 1151. Minimum Swaps to Group All 1's Together

1151. Minimum Swaps to Group All 1's Together

Leetcode Solutions

Sliding Window with Two Pointers

  1. Count the total number of 1's in the array, which will be the size of the sliding window (ones).
  2. Initialize two pointers, left and right, to maintain the sliding window, and a variable max_one to store the maximum number of 1's found in any window.
  3. Slide the window across the array by incrementing right and, if the window size exceeds ones, increment left as well.
  4. Update the number of 1's in the current window (cnt_one) by adding the new element at right and subtracting the element at left if the window size exceeds ones.
  5. Update max_one with the maximum of its current value and cnt_one.
  6. The minimum number of swaps required is ones - max_one.
UML Thumbnail

Prefix Sum and Suffix Sum Arrays

Ask Question

Programming Language
image/screenshot of info(optional)
Full Screen
Loading...

Suggested Answer

Answer
Full Screen
Copy Answer Code
Loading...