How to Solve Minimum Rounds to Complete All Tasks Problem
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Minimum Rounds to Complete All Tasks
You are given a 0-indexed integer array tasks, where tasks[i] represents the difficulty level of a task. In each round, you can complete either 2 or 3 tasks of the same difficulty level. Return the mi...
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Understanding the Minimum Rounds to Complete All Tasks Problem
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Problem Statement
You are given a 0-indexed integer array tasks, where tasks[i] represents the difficulty level of a task. In each round, you can complete either 2 or 3 tasks of the same difficulty level. Return the minimum rounds required to complete all the tasks, or -1 if it is not possible to complete all the tasks.
Minimum Rounds to Complete All Tasks
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Examples
tasks = [2,2,3,3,2,4,4,4,4,4]4To complete all the tasks, a possible plan is: - In the first round, you complete 3 tasks of difficulty level 2. - In the second round, you complete 2 tasks of difficulty level 3. - In the third round, you complete 3 tasks of difficulty level 4. - In the fourth round, you complete 2 tasks of difficulty level 4. It can be shown that all the tasks cannot be completed in fewer than 4 rounds, so the answer is 4.
tasks = [2,3,3]-1There is only 1 task of difficulty level 2, but in each round, you can only complete either 2 or 3 tasks of the same difficulty level. Hence, you cannot complete all the tasks, and the answer is -1.
Constraints
1 <= tasks.length <= 1051 <= tasks[i] <= 109How Interview Coder Helps with Leetcode Problems
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