Package g1801_1900.s1899_merge_triplets_to_form_target_triplet

Class Solution

java.lang.Object
g1801_1900.s1899_merge_triplets_to_form_target_triplet.Solution
public class Solution extends Object
1899 - Merge Triplets to Form Target Triplet\. Medium A **triplet** is an array of three integers. You are given a 2D integer array `triplets`, where triplets[i] = [ai, bi, ci] describes the ith **triplet**. You are also given an integer array `target = [x, y, z]` that describes the **triplet** you want to obtain. To obtain `target`, you may apply the following operation on `triplets` **any number** of times (possibly **zero** ): * Choose two indices ( **0-indexed** ) `i` and `j` (`i != j`) and **update** `triplets[j]` to become [max(ai, aj), max(bi, bj), max(ci, cj)]. * For example, if `triplets[i] = [2, 5, 3]` and `triplets[j] = [1, 7, 5]`, `triplets[j]` will be updated to `[max(2, 1), max(5, 7), max(3, 5)] = [2, 7, 5]`. Return `true` _if it is possible to obtain the_ `target` _**triplet**_ `[x, y, z]` _as an **element** of_ `triplets`_, or_ `false` _otherwise_. **Example 1:** **Input:** triplets = \[\[2,5,3],[1,8,4],[1,7,5]], target = [2,7,5] **Output:** true **Explanation:** Perform the following operations: - Choose the first and last triplets [[2,5,3],[1,8,4],[1,7,5]]. Update the last triplet to be [max(2,1), max(5,7), max(3,5)] = [2,7,5]. triplets = \[\[2,5,3],[1,8,4],[2,7,5]] The target triplet [2,7,5] is now an element of triplets. **Example 2:** **Input:** triplets = \[\[3,4,5],[4,5,6]], target = [3,2,5] **Output:** false **Explanation:** It is impossible to have [3,2,5] as an element because there is no 2 in any of the triplets. **Example 3:** **Input:** triplets = \[\[2,5,3],[2,3,4],[1,2,5],[5,2,3]], target = [5,5,5] **Output:** true **Explanation:** Perform the following operations: - Choose the first and third triplets [[2,5,3],[2,3,4],[1,2,5],[5,2,3]]. Update the third triplet to be [max(2,1), max(5,2), max(3,5)] = [2,5,5]. triplets = \[\[2,5,3],[2,3,4],[2,5,5],[5,2,3]]. - Choose the third and fourth triplets [[2,5,3],[2,3,4],[2,5,5],[5,2,3]]. Update the fourth triplet to be [max(2,5), max(5,2), max(5,3)] = [5,5,5]. triplets = \[\[2,5,3],[2,3,4],[2,5,5],[5,5,5]]. The target triplet [5,5,5] is now an element of triplets. **Constraints:** * 1 <= triplets.length <= 105 * `triplets[i].length == target.length == 3` * 1 <= ai, bi, ci, x, y, z <= 1000

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • mergeTriplets

      public boolean mergeTriplets(int[][] triplets, int[] target)