K Unique Characters Leetcode

Leetcode 560 Subarray Sum Equals K 29 Sep 2021. Given a string s and an int k return all unique substrings of s of size k with k distinct characters.

Sort Array By Increasing Frequency Leetcode Solution In 2021 Problem Statement Sorting Time Complexity

Public int lengthOfLongestSubstringKDistinctString s int k.

K unique characters leetcode. S eceba k 2. If it does not exist return -1. Starting from the possible maximum length n slength do the following.

Given a string find the length of the longest substring T that contains at most k distinct characters. Leetcode 209 Minimum Size Subarray Sum 29 Sep 2021. First Unique Character in a String.

If the given string doesnt have k distinct characters return 0. Bac cab Example 3. There are only three distinct characters in the string.

Leetcode First Unique Character in a String problem solution YASH PAL September 25 2021. Leetcode 325 Maximum Size Subarray Sum Equals k 29 Sep 2021. Given a string you need to print the size of the longest possible substring that has exactly K unique characters.

Longest Substring Without Repeating Characters 159. S eceba k 2. S abcabcabca k 4.

Given a string find the length of the longest substring T that contains at most k distinct characters. Longest Substring with At Most Two Distinct Characters 340. If it does return.

10 length S 1000000. I start index test every start index to check whether it can be a substring of length K and containing different characters if contains duplicate character break start from next index. If we apply this brute force it would take O nn to generate all substrings and O n to do a check on each one.

340 Longest Substring with At Most K Distinct Characters Given a string find the length of the longest substring T that contains at most k distinct characters. Fraction to Recurring Decimal. S aaaa K 2 Output.

S abacab k 3 Output. If we apply this brute force it would take O n 2 to generate all substrings and O n to do a check on each one. Pq pqp pqpq qp qpq pq qs Example 2.

The map track the count of each character if this character is seen the first time we increase the counter for unique character. Return the number of substrings that contains at least k distinct characters. That contains at most k distinct characters.

Longest Substring With At Most K Distinct Characters is a LeetCode problem. For example Given s eceba and k 2 T is ece which its length is 3. A simple way is to generate all the substring and check each one whether it has exactly k unique characters or not.

When we have 5 distinct characters we need to put the left pointer to the leftmost of all which is O. Keep track of the number of unique characters in the current sliding window having at least k frequency given by countAtLeastK. Leetcode 159 Longest Substring with At Most Two Distinct Characters 02 Nov 2021.

K-diff Pairs in an Array. Lets define a function countUniqueCharss that returns the number of unique characters on s. Mathcal O text maxUnique cdot N OmaxUniqueN.

Given a string find the length of the longest substring T that contains at most k distinct characters. 1 k 26. A simple way is to generate all the substring and check each one whether it has exactly k unique characters or not.

In this Leetcode First Unique Character in a String problem solution you have given a string s find the first non-repeating character in it and return its index. Longest Substring with At Most K Distinct Characters Posted on March 4 2018 July 26 2020 by braindenny Longest Substring with At Most K Distinct Characters. Longest Substring with At Most K Dis.

Leetcode 340 Longest Substring with At Most K Distinct Characters 02 Nov 2021. Leetcode 30 Longest Substring with At Most K Distinct Characters 02 Nov 2021. Given a string find the length of the longest substring T that contains at most k distinct characters.

If the length of string is n then there can be n n12 possible substrings. We would record the rightmost position for each character in s ij using a hashmap and when the number of distinct characters exceeds k ie becomes k1 we need to find the leftmost character in the hashmap. We iterate over the string of length.

Given a string s find the first non-repeating character in it and return its index. Abc bca cab Example 2. For example if s LEETCODE then L T C O D are the unique characters since they appear only once in s therefore countUniqueCharss 5.

If it does not exist return -1. S pqpqs k 2 Output. T is ece which its length is 3.

Update the result if all the characters in the window have at least k frequency. Leetcode 76 Minimum Window Substring 01 Nov 2021. Formatted question description.

Cbebebe is the longest substring with K distinct characters. Leetcode 647 Palindromic Substrings 01 Nov 2021. Thats the minimum steps we need to move forward the end pointer.

In this post we will see how we can solve this challenge in C. If s null slength 0 k 0. Given s eceba and k 2 T is ece which its length is 3.

Longest Substring with At Most K Distinct Characters LeetCode 340. S abcabc k 3 Output. The only trick here is we need to check at the last that if the start pointer is out of boundary we still need to check if the largest window size.

Leetcode 560 Subarray Sum Equals K 29 Sep 2021. Public int KSubstringString stringIn int K. S aa k 1.

Longest Substring with At Most K Distinct Characters leetcodeLongest Substring with At Most K Distinct Characters. The stop condition is that when the window size is again equal to the K which means the window contains K distinct characters. Otherwise keep sliding one character at a time until reaching the right end.

If stringIn null stringInlength 0 K. Initialize a hash map of each distinct characters frequency. Public class Solution.

For example Given s eceba and k 2 T is ece which its length is 3. S aabacbebebe K 3 Output. From left to right slide a window of length n to check if a substring meets the required condition.

If there is no possible substring then print -1. Method 1 Brute Force If the length of string is n then there can be n n12 possible substrings. Leetcode 647 Palindromic Substrings 01 Nov 2021.

Reverse Nodes in k-Group. Thus overall it would go O nnn. Leetcode 76 Minimum Window Substring 01 Nov 2021.

T is ece which its length is 3. Given a string s return the sum of countUniqueCharst where t.

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