题目大意:给定字符串S和T,现在从S中任选字符组成T,要求输出方案个数. Example 1:Input: S = "rabbbit", T = "rabbit"Output: 3Explanation: As shown below, there are 3 ways you can generate "rabbit" from S.(The caret symbol ^ means the chosen letters) rabbbit^^^…

2020-01-03 13:29:04 问题描述: 问题求解: 经典的动态规划题目,一般来说dp题目是递推关系公式难想,但是实际代码量还是比较少的. 有尝试过dfs来做,但是由于时间复杂度是指数级别的,所以会TLE. public int numDistinct(String s, String t) { int n1 = s.length(); int n2 = t.length(); int[][] dp = new int[n2 + 1][n1 + 1]; for (int i = 0;…

Distinct Subsequences Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from the original string by deleting some (can be none) of the characters without di…

Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from the original string by deleting some (can be none) of the characters without disturbing the relative…

题目链接 题目要求: Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from the original string by deleting some (can be none) of the characters without disturbing th…

Given a string S and a string T, count the number of distinct subsequences ofT inS. A subsequence of a string is a new string which is formed from the original string by deleting some (can be none) of the characters without disturbing the relative po…

Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from the original string by deleting some (can be none) of the characters without disturbing the relative…

Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from the original string by deleting some (can be none) of the characters without disturbing the relative…

题目 Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from the original string by deleting some (can be none) of the characters without disturbing the relati…

Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from the original string by deleting some (can be none) of the characters without disturbing the relative…