Leetcode Problem 830. Positions of Large Groups

830. Positions of Large Groups

Leetcode Solutions

Two Pointer Approach for Identifying Large Groups

  1. Initialize an empty list result to store the intervals of large groups.
  2. Initialize two pointers i and j to 0.
  3. Iterate through the string using j as the index. a. If j reaches the end of the string or the character at j is not equal to the character at j + 1, check if the group is large. b. If the group is large (i.e., j - i + 1 >= 3), append the interval [i, j] to result. c. Update i to j + 1 to start the next group.
  4. Return the result list.
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Iterative Group Counting Approach

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