Package g0801_0900.s0830_positions_of_large_groups

Class Solution

java.lang.Object

g0801_0900.s0830_positions_of_large_groups.Solution

public class Solution
extends Object

830 - Positions of Large Groups\. Easy In a string `s` of lowercase letters, these letters form consecutive groups of the same character. For example, a string like `s = "abbxxxxzyy"` has the groups `"a"`, `"bb"`, `"xxxx"`, `"z"`, and `"yy"`. A group is identified by an interval `[start, end]`, where `start` and `end` denote the start and end indices (inclusive) of the group. In the above example, `"xxxx"` has the interval `[3,6]`. A group is considered **large** if it has 3 or more characters. Return _the intervals of every **large** group sorted in **increasing order by start index**_. **Example 1:** **Input:** s = "abbxxxxzzy" **Output:** [[3,6]] **Explanation:** `"xxxx" is the only` large group with start index 3 and end index 6. **Example 2:** **Input:** s = "abc" **Output:** [] **Explanation:** We have groups "a", "b", and "c", none of which are large groups. **Example 3:** **Input:** s = "abcdddeeeeaabbbcd" **Output:** [[3,5],[6,9],[12,14]] **Explanation:** The large groups are "ddd", "eeee", and "bbb". **Constraints:** * `1 <= s.length <= 1000` * `s` contains lowercase English letters only.

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
List<List<Integer>>	largeGroupPositions(String s)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Solution

public Solution()

Method Details

largeGroupPositions

public List<List<Integer>> largeGroupPositions(String s)