lis

来源： https://stackoverflow.com/questions/64204751/spark-collect-list-change-data-type-from-array-to-string

来源： https://stackoverflow.com/questions/64204751/spark-collect-list-change-data-type-from-array-to-string

来源： https://stackoverflow.com/questions/64204751/spark-collect-list-change-data-type-from-array-to-string

来源： https://stackoverflow.com/questions/64204751/spark-collect-list-change-data-type-from-array-to-string

问题 This is a variant of the longest increasing subsequence problem. Suppose that, instead of wanting to find a sequence or counting how many sequences there are, you wanted to identify items that can be part of some longest increasing sequence. For example, in the list 1,2,4,3,0,5 all items except the zero can be part of a longest increasing subsequence. What is a strategy to find these items? How efficiently can it be done? 回答1: One method is to use the same dynamic algorithm as in the longest

问题 Why I created a duplicate thread I created this thread after reading Longest increasing subsequence with K exceptions allowed. I realised that the person who was asking the question hadn't really understood the problem, because he was referring to a link which solves the "Longest Increasing sub-array with one change allowed" problem. So the answers he got were actually irrelevant to LIS problem. Description of the problem Suppose that an array A is given with length N . Find the longest

问题 I have the following algorithm which works well I tried explaining it here for myself http://nemo.la/?p=943 and it is explained here http://www.geeksforgeeks.org/longest-monotonically-increasing-subsequence-size-n-log-n/ as well and on stackoverflow as well I want to modify it to produce the longest non-monotonically increasing subsequence for the sequence 30 20 20 10 10 10 10 the answer should be 4: "10 10 10 10" But the with nlgn version of the algorithm it isn't working. Initializing s to

问题 I have the following algorithm which works well I tried explaining it here for myself http://nemo.la/?p=943 and it is explained here http://www.geeksforgeeks.org/longest-monotonically-increasing-subsequence-size-n-log-n/ as well and on stackoverflow as well I want to modify it to produce the longest non-monotonically increasing subsequence for the sequence 30 20 20 10 10 10 10 the answer should be 4: "10 10 10 10" But the with nlgn version of the algorithm it isn't working. Initializing s to

问题 I am trying to understand the algorithm that gives me the number of increasing subsequences of length K in an array in time O(n k log(n)). I know how to solve this very same problem using the O(k*n^2) algorithm. I have looked up and found out this solution uses BIT (Fenwick Tree) and DP. I have also found some code, but I have not been able to understand it. Here are some links I've visited that have been helpful. Here in SO Topcoder forum Random webpage I would really appreciate if some can

问题 I have following code: for (int c = 0; c < date_old.Length; c++) { for (int d = 0; d < date_new.Length; d++) { newList[c] = data_old[c]; if (date_old[c] == date_new[d]) { newList[c] = data_new[d]; } } } What I'm trying to do is the following: I have four arrays: date_new , date_old , data_new , data_old and a List called newList . date_old and data_old have the same length and date_new and data_new too. I want to loop through the date arrays check if there are equal date values. While I'm