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Create 3641.Longest-Semi-Repeating-Subarray.cpp
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Two_Pointers/3641.Longest-Semi-Repeating-Subarray/Readme.md
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| ### 3641.Longest-Semi-Repeating-Subarray | ||
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| 非常明显的双指针,但是滑窗右边界j的控制需要格外小心。 | ||
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| 对于任意的左边界i,当满足`while (j+1<n && count<=k)`时(count统计repeat元素的个数),可以将nums[++j]加入统计。如果循环退出,注意有两种情况: | ||
| 1. 如果count>k,那么意味着j超出了合法的范围,合法subarray的长度最多是`j-i`. | ||
| 2. 如果count<=k,那么意味着j已经到了最后一个元素(即n-1)但是仍未超出合法范围,故此时合法subarray的长度是`j-i+1`. |
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