Generate all possible substrings and check whether the substring has exactly k distinct characters or not. The 6 unique substrings are {a, b, d, ab, bd, abd}. Hash each substring of length L, and check if any hash occurs K or more times. Each candy costs 1 unit. Base case: when n becomes 0 (means array is full). This particular task can also be performed using the inbuilt function of combinations, which helps to get all K length the possible combinations i.e the substrings from a string. Examples: Input : s = "aabbcc" k = 2 Output : 6 The substrings are aa, bb, cc, aabb, bbcc and aabbcc. First line input: a string s. Second line input: an integer denoting k.; The Format of Output: The respective lexicographically the smallest and the largest substrings of the string s as a single newline-separated string. Above solution is of o(n^3) time complexity. Example 2: Input: jaja Ouput: 7 Explanation ... Shortest string containing all fixed-length substrings. filter_none. So if S = “heyfriendshowareyou” and K is 5, then output will be 15, as the strings are [heyfr, eyfri, yfrie, frien, riend, iends, endsh, ndsho, dshow, showa, howar, oware, warey, areyo, reyou], To solve this, we will follow these steps −, Let us see the following implementation to get a better understanding −, Find all possible substrings after deleting k characters in Python, Maximum count of substrings of length K consisting of same characters in C++, Find number of substrings of length k whose sum of ASCII value of characters is divisible by k in C++, Count number of substrings with exactly k distinct characters in C++, Program to find length of longest substring which contains k distinct characters in Python, Program to find length of substring with consecutive common characters in Python, Find the longest substring with k unique characters in a given string in Python, Program to find k-length paths on a binary tree in Python, Count substrings with same first and last characters in C++. Print all middle elements of the given matrix/2D array. Next. close, link Print all substrings of a given string; Sum of all sub arrays in O(n) Time; Print all middle elements of the given matrix/2D array. I would say to use a suffix array instead, but if you already have a suffix tree, building a suffix array from a suffix tree takes linear time by DFS. 3. This particular utility is very popular in competitive programming and having shorthands to solve this problems can always be handy. The required task is to take out one letter from the string and print the remaining letters in the string. After having such function, you can binary search over the length of the palindrome, this is: fix a length k, then go over every substring of length k and check whether it is or not a palindrome. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.. Visit Stack Exchange Experience. Autocomplete. The idea is inspired from Longest Palindromic Substring problem. I like this problem, so i decided to put my solution on my site.Below is the question and solution… Read More » There are many problems in which we require to get all K length substrings of a string. Suppose we have a string S, we have to find the number of substrings of length K where no characters are repeated. edit Example 1: Input: ... We need only to check all sub-strings of length k. Show Hint 2. This is just brute force method to perform this task. 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Input Format: So now we have a reduction of our problem to a smaller … A substring of a string S is a string S' that occurs in S. For example, "bam" is a substring of "babammm". One solution. Longest substring with at most K unique characters; Find Factorial of a given Number; Print all steps to convert one string to another string; Insert a node in the given sorted linked list. Program to find length of concatenated string of unique characters in Python? 2a) What we can do here is count all possibilities of filling in the prefix and then subtract the possibilities where s is in. Binary string that contains all substrings of length k exactly once. The combination of list comprehension and string slicing can be used to perform this particular task. Here are the steps to how it's done, Create a list of vowels for reference and assign [ a, e, i, o, u ]. Problems. Assume you know the length L of the repeated string. By using our site, you res = [test_str [x:y] for x, y in combinations (range(len(test_str) + 1), r = 2) if len(test_str [x:y]) == K ] print("All K length substrings of string are : " + str(res)) chevron_right. Method #1 : Using list comprehension + string slicing Given an array, Print sum of all subsets; Given an array, print all unique subsets with a given sum. Sign in . Given a string s and an integer k. Return the maximum number of vowel letters in any substring of s with length k. Vowel letters in English are (a, e, i, o, u). Ask Question Asked 5 years, 7 months ago. If we apply this brute force, it would take O (n*n) to generate all substrings and O (n) to do a check on each one. Calculate the total number of unique substrings of the given string. Suppose we have a string S, we have to find the number of substrings of length K where no characters are repeated. To address this just run two binary search, first over … 2. Sum of all Subarrays | Set 1; Find subarray with given sum | Set 1 (Nonnegative Numbers) Find subarray with given sum | Set 2 (Handles Negative Numbers) Find subarray with given sum with negatives allowed in constant space; Smallest subarray with sum greater than a given value; Find maximum average subarray of k length Method #2 : Using itertools.combinations() Input: str = google Output: e l g o oo goog A simple solution would be to generate all substrings of the given string and print substrings that are palindrome. 1461/1713. Active 2 years, 9 months ago. brightness_4 String k = "ALGO" N=2 Result: AA LA GA OA AL LL GL OL AG LG GG OG AO LO GO OO Approach: This problem is quite similar to Print All N Length Strings from Given Number K. Loop through i = 1 to K. Add k[i] to the result Array, which is the size N and make a recursive call to (N-1). Here string BCG has ASCII sum 300, ABC has ASCII sum 294, both are divisible by k = 3. Longest k-repeated substring. Given a text string and an integer L, find all repeated substrings of length L or more. C++. Find all possible substrings after deleting k characters in Python Python Server Side Programming Programming we are given a string. Example 1: A simple way is to generate all the substring and check each one whether it has exactly k unique characters or not. As we have two loops and also String’s substring method has a time complexity of o(n) If you want to find all distinct substrings of String,then use HashSet to remove duplicates. code. Given a text string and an integer k, find the longest substring that is repeated k or more times. Longest common substring among three strings. The approach is simple. Return True if every binary code of length k is a substring of s. Otherwise, return False. If so, check to make sure you didn't get unlucky. Program to find string after deleting k consecutive duplicate characters in python, Program to find length of longest substring with character count of at least k in Python, Program to find length of longest increasing subsequence with at least k odd values in Python, Program to find minimum required chances to form a string with K unique characters in Python, Find substrings that contain all vowels in Python, create one empty map m, and left := 0 and right := -1 and ans := 0, if right – left + 1 = k, then increase ans by 1. Input : s = "aabccc" k = 2 Output : 3 There are three substrings aa, cc and cc Since you don't know L, repeatedly double your guess of L until you know the … Please use ide.geeksforgeeks.org, Print all substrings of a given string; Print all sub sequences of a given array; Print all sub sequences of a given String; Print all subarrays using recursion; ZigZag OR Diagonal traversal in 2d array/Matrix using queue; Hamming Distance between two given strings; Find Factorial of a given Number; Print all middle elements of the given matrix/2D array. [Mihai Patrascu] Given an integer K and a string of length N, find the longest substring which appears at least K times. Compare every vowel count of substrings and return the maximum vowel count. The complexity of this solution would be O(n 3).. We can solve this problem in O(n 2) time and O(1) space. Method 2 In this method the main idea is to use hash table Time Complexity : O (n*n) Strengthen your foundations with the Python Programming Foundation Course and learn the basics. For each character in the given string, we consider it as mid point of a palindrome … We have to find the number of substrings of length k, whose sum of ASCII values of characters is divisible by k. Suppose a string is “BCGABC”. Please go through Frequently asked java interview Programs for more such programs. Matching substrings within two strings. You can pick some continuous candies such that you can create a palindrome of length K by using some or all picked candies. The number of distinct sub-strings should be exactly 2^k. currStr = currStr.substring (1, k) + s.charAt (i); if (lexMax.compareTo (currStr) < 0) lexMax = currStr; if (lexMin.compareTo (currStr) > 0) lexMin = currStr; Java Program to find Lexicographically smallest and largest substring of length k Write a Java Program to find Lexicographically smallest and largest substring of length k. This problem is derived from the String section of Hackerrank in java. Output : The original string is : Geeks All K length substrings of string are : ['Gee', 'eek', 'eks'] Attention geek! 1. class Solution {2. public: 3 Pick One. Given a string and an integer k, find number of substrings in which all the different characters occurs exactly k times. Long repeated substring. Algorithm: Find the first k longest substrings between two similar strings. 0. xxxxxxxxxx . Prev. Generate all the strings of length n from 0 to k-1. Generate all the strings of length n from 0 to k-1. At first we have to find the ASCII value of characters of first substring, whose length is k. We have to use the … Counting this later part comes down to our original problem: getting the "Number of strings (of length n) containing a specific substring" only for a smaller length (now the length of our prefix, instead of the length of the entire string). Print maximum occurring character in a String; Given an array, find three-element sum closest to Zero; Check if one string is a subsequence of another string. Let’s discuss certain ways in which this problem can be solved. This is the best place to expand your knowledge and get prepared for your next interview. Problem Statement: Given a string of lowercase alphabets, count all possible substrings (not necessarily distinct) that has exactly k distinct characters.Example: Input: abc, k = 2 Output: 2 Possible substrings are {"ab", "bc"} I have written the solution with a two pointer approach. Method 1 (Brute Force) If the length of string is n, then there can be n* (n+1)/2 possible substrings. Iterate from 0th to (s.Length - k)th index of the string s to get all the substrings of length k. Count the vowels for every substring. Viewed 1k times 2 $\begingroup$ Here is the problem I'm working on (Satan's apple with bounded memory decision problem): Suppose I offer you slices of an apple, first $1/2$, then $1/4$, ... then $1/2^k$, etc. Writing code in comment? String currStr = s.substring (0, k); String lexMin = currStr; String lexMax = currStr; for (int i = k; i < s.length (); i++) {. Level up your coding skills and quickly land a job. Input The first line contains a single integer T, the number of test cases. Attention geek! And the value of k is 3. For k = 3, o/p is ‘bcbdbdbbdcd’ For k = 5, o/p is ‘abcbdbdbbdcdabd’ A simple solution would be to generate all substrings of the given string and return the longest substring containing k distinct characters. 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Social Network Problem; Print all subarrays using recursion; Count and print all Subarrays with product less than K in O(n) Find all unique combinations of numbers (from 1 to 9 ) with sum to N Example 1: Input: abd Ouput: 6 Explanation: str = abd. So if S = “heyfriendshowareyou” and K is 5, then output will be 15, as the strings are [heyfr, eyfri, yfrie, frien, riend, iends, endsh, ndsho, dshow, showa, howar, oware, warey, areyo, reyou] Yes, suffix trees can be used to find all common substrings. Sign in to view your submissions. generate link and share the link here. Generate all the strings of length n from 0 to k-1. If such a substring exists then print YES else print NO. The Problem in brief - i am given a string of length N. I have to check among all the the substrings that whether a substring exist or not which is palindrome and having length greater than 1. Concatenated string of unique substrings are { a, b, d, ab, bd, abd } =... 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