Given a string of length N of lowercase alphabet characters. size of corresponding trie). The task is to complete the function countDistinctSubstring(), which returns the count of total number of distinct substrings of this string.. We can convert this complexity to n^3 by using an array instead of a set . Medium #4 Median of Two Sorted Arrays. I am using trie of suffixes to solve it. I was solving DISTINCT SUBSTRING (given a string, we need to find the total number of its distinct substrings). Suffix trie 1.Dont use array in structure use map (to pass memory and tle) 2.every node we have distinct so count each and every node that we created on trie code Link(A.C): <-- snip - … Description Take a string of lowercase alphabets only as input from user, and then count the number of distinct substrings of the string by using a trie. (Insert operation in set is causing the logn factor) ... Obviously some new substrings ending in c will appear. Medium #6 ZigZag Conversion. A Computer Science portal for geeks. Trie helps us to save all substrings in a compressed fashion, and it helps to find count of distinct substrings formed by a string and also allows us to count the frequency of each substrings … Given an integer k and a string s, find the length of the longest substring that contains at most k distinct characters. Given a string S, count the number of distinct, non-empty subsequences of S. Since the result may be large, return the answer modulo 10^9 + 7. Then T test cases follow. The first approach which comes to mind is brute force .In this approach we are using a set to store all the distinct substrings. For example, given s = "abcba" and k = 2, the longest substring with k distinct … I am passing the test cases, but getting TLE when I submit. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview … This tutorial introduces two solutions to find all distinct palindromic substrings in a string. Medium #7 Reverse Integer. Hard #5 Longest Palindromic Substring. Since this is a discussion, I will just put here: The main problem is counting unique substrings. Longest Substring with At Most K Distinct Characters - [Hard] Problem description. Input: The first line of input contains an integer T, denoting the number of test cases. Number of distinct substrings is just sum of lengths of its edges (i.e. \$\endgroup\$ – Dmitri Urbanowicz Jul 8 '18 at 14:14 add a comment | Your Answer Also, the space consumed is very large, at 4093M. This is not done by simple combinatorics (I know the formulas and it doesn't work here). Each test case contains a string str. 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