Leetcode Problem 1764. Form Array by Concatenating Subarrays of Another Array

1764. Form Array by Concatenating Subarrays of Another Array

Leetcode Solutions

Iterative Group Matching

  1. Initialize a pointer idx to 0 to track the current position in nums.
  2. Iterate over each group in groups. a. For the current group, iterate over nums starting from idx. b. Check if the current subarray of nums matches the group. c. If it matches, update idx to the end of the matched subarray. d. If it does not match, move to the next position in nums and repeat step 2b.
  3. If all groups are matched, return true.
  4. If any group cannot be matched, return false.
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Two-Pointer Approach with Group Verification

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