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Problem editorial
Implement Solution.predictPartyVictory, which receives senate, a non-empty string describing senators arranged in a circle. Each character is one senator: R belongs to the Radiant party and D belongs to the Dire party. The characters' order determines the order in which senators act, starting with the first character.
Dota2 Senate is a Greedy Patterns problem, in the Task Scheduling (Frequency Based) subpattern. The pattern covers interval scheduling, jump games, stock trading, and task scheduling
The reference solution runs in O(n) time and O(n) space.
The full editorial is part of Pro
It explains the core insight, the complexity analysis and the common mistakes, with a worked solution.
Dota2 Senate is a Greedy Patterns problem, in the Task Scheduling (Frequency Based) subpattern. Once the approach above makes sense, write it yourself and then work through the neighbouring problems that reuse it.