And even after having a basic idea, it’s quite hard to pinpoint to a good algorithm without first trying them out on different datasets. The string consists of lowercase English alphabets. Now you call that function with the string and each of its suffix (by using the substring method). the link for the problem is : https://www.hackerrank.com/contests/python-recruitment-02/challenges/string-similarity, for Github repo: https://github.com/Athul9628/HackerRank/blob/master/hackerrabk/python/String%20Similarity.py, Get the input for number of strings and string in for loop. Thus, the answer is 6 + 0 + 3 + 0 + 1 + 1 = 11. Change ), You are commenting using your Twitter account. In my solution I didn't end up relying on sorting, only on hashing, to help reduce the set of string positions that I need to examine. 2. gig and aba are similar, so our answer is . For more details : https://en.wikipedia.org/wiki/String_metric, But hackerRank problem is to find similarity between the text and suffixes, *note that example programs are only of python. It was accepted during the time I submitted around 4 months ago, but currently it is failing last 2 test cases due to time limit. For the first case, the suffixes of the string are “ababaa”, “babaa”, “abaa”, “baa”, “aa” and “a”. Now we compare each elements in char_array[R-L]. The similarities of each of these strings with the string “ababaa” are 6,0,3,0,1,1 respectively. For example, the similarity of strings “abc” and “abd” is 2, while the similarity of strings “aaa” and “aaab” is 3. 6 (because ababaa = ababaa) 0 (because ababaa ≠ babaa) 3 (because ababaa and abaa share three initial characters) 0 (because ababaa ≠ baa) I will do an youtube video to explain how z algorithm works. Secondly, String.charAt() seems to be slower than accessing an array with an index. Solve this proble using Z-algorithm. Here you go! ( Log Out /  Well, it’s quite hard to answer this question, at least without knowing anything else, like what you require it for. "Solution is correct" means the output matches what's provided by HackerRank. It failed when you encounter a string like “aaaaa..aa”. find the length of string and store it in variables n and c. Define an z array for the size on n. The left and right are denoted as L and R, they are initialized to 0. In that case, the running time will be n*n/2, which is not good enough. You signed out in another tab or window. This implementation is accepted by the HackerRank website! Important: Output T lines containing the answer for the corresponding test case. String Stream in C++ Hackerrank Solution In this StringStream Hackerrank Solution in C++, StringStream is a stream class to operate on strings. The similarities of these strings with the string "ababaa" are 6,0,3,0,1, & 1 respectively. Thus the answer is 6 + 0 + 3 + 0 + 1 + 1 = 11. So, I first convert the string to an array and then use index. For the second case, the answer is 2 + 1 = 3. Give them a try, it may be what you needed all along. Firstly, I wanna thank you for your post. Room for improvement. Hacker Rank Solution Program In C++ For " Strings ",merge strings hackerrank solution, two strings hackerrank solution, string construction hackerrank solution in c, hackerrank in a string solution, hackerrank merge strings, hackerrank read input from stdin, hackerrank c++ solutions,Hacker rank solution for Strings, HackerRank Solutions, C/C++ Logic & Problem Solving: Funny String Hacker … HackerRank python challenge – String similarity. yyy because z > y.If one string is an exact prefix of the other it is lexicographically smaller, e.g., gh [TopCoder, ProjectEuler, HackerRank, CodeChef, CodeForces, InterviewSites], Problem link: https://www.hackerrank.com/challenges/string-similarity. I guess HackerRank made the checking algorithm more strict. If z[k] lesser than R-i+1 then append z with z[k], Else we compare each elements in char_array[R-L]. gi, ig, ga, ab, ba, and aj are similar, so our answer is . I like to see how the spam programs are evolving. Calculate the sum of similarities of a string S with each of it’s suffixes. A suffix array can be constructed in linear time (Look at this research: http://www.cs.sysu.edu.cn/nong/index.files/Two%20Efficient%20Algorithms%20for%20Linear%20Suffix%20Array%20Construction.pdf ). Beeze Aal 30.Jul.2020. C++. to refresh your session. HACKERRANK SOLUTION: FIND A STRING (In PYTHON3) def count_substring(string, sub_string): c=0. Are you intrested in mobile app designs . Constraints: The solution code for Permutations of Strings hackerrank problem is as follows: Generating the permutations in lexicographical order is a well-known problem with solution described here . This includes combination of algebra to pure math or logical math. The following operators/functions are commonly used here. First of all, calculating the substring is an expensive operation and we can achieve what we want by keeping track of the start index. Now convert the string input into list. Contribute to srgnk/HackerRank development by creating an account on GitHub. int Match(const string &,const string &); int main() { int test; cin>>test; string s,s1; int len; while(test--) { int sum=0,c=0; cin>>s; len=s.length(); int index[len]; int i=0; while(s[i]!='\0') { if(s[i]==s[0]) { index[c]=i; c++; } i++; } for(i=0;i