Leetcode Problem 1296. Divide Array in Sets of K Consecutive Numbers

1296. Divide Array in Sets of K Consecutive Numbers

Leetcode Solutions

Greedy Approach with Sorting and Frequency Counting

  1. Check if the length of nums is divisible by k. If not, return false.
  2. Create a frequency map to count the occurrences of each number in nums.
  3. Sort the array nums.
  4. Iterate through the sorted nums array.
  5. For the current number num, if its frequency is greater than 0, attempt to form a group starting with num.
  6. For each number i from num to num + k - 1, check if i is in the frequency map with a non-zero count.
  7. If any such i is not found or has a frequency of 0, return false.
  8. Otherwise, decrement the frequency of each number in the group by 1.
  9. After the loop, if all groups are successfully formed, return true.
UML Thumbnail

Using a Min-Heap and Frequency Map

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