LeetCode --- 2103. Rings and Rods 解题报告
Question:
There are n rings and each ring is either red, green, or blue. The rings are distributed across ten rods labeled from 0 to 9.
You are given a string rings of length 2n that describes the n rings that are placed onto the rods. Every two characters in rings forms a color-position pair that is used to describe each ring where:
- The first character of the
ithpair denotes theithring's color ('R','G','B'). - The second character of the
ithpair denotes the rod that theithring is placed on ('0'to'9').
For example, "R3G2B1" describes n == 3<
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