A string is good if there are no repeated characters. Given a strings, return the number of good substrings of length three ins. Note that if there are multiple occurrences of the same substring, every occurrence should be counted. A substring is a contiguous sequence of characters in a str...
Extract unique distinct values from cell range that begins with string Extract unique distinct text values containing string in a range Extract unique distinct values if adjacent cell is text Extract unique distinct values based on the 4 last characters Remove duplicates within same month or year Fil...
This example lets you specify a string and a record is shown in cell range A30:D36 if it does NOT match the beginning characters in column A and it is NOT a DUPLICATE record. Update 11 December 2020, Excel 365 formula in cell A30: =UNIQUE(FILTER(A30:D36, A30:A36<>G29)) The form...
Let's denote the f(x)function for a string xas the number of distinct characters that the string contains. For example f(abc)=3, f(bbbbb)=1, and f(babacaba)=3. Given a string s, split it into two non-empty strings aand bsuch that f(a)+f(b)is the maximum possible. In othe...
Given a stringSwith only lowercase characters. Return the number of substrings that contains at leastkdistinct characters. Example 1: Input:S ="abcabcabca", k =4 Output:0 Explanation:There are only threedistinctcharactersinthestring. Example 2: ...
Given a string, find the length of the longest possible substring in it that has exactly K distinct characters. If there is no possible substring then print -1. You can assume that K is less than or equal to the length of the given string. Example 1: Input: S = "aabacbebebe", K ...
For String or Characters, using System; using System.Text; public class Program{ public static void Main(){ String s = "aasjnajsnascnsdchhede"; //Declaring Empty Box StringBuilder sb = new StringBuilder(); foreach(char c in s){ //Checking at the Entry if(sb.ToString()....
2.Longest Substring with K Distinct Characters 2.1 问题描述 Given a string, find the length of the longest substring T that contains at most k distinct characters. 「Example 1:」 Input: s = "eceba", k = 2 Output: 3 Explanation: T is "ece" which its length is 3. 「Example 2:」...
Given a stringSand a stringT, count the number ofdistinctsubsequences ofTinS.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 positions of the remaining characters. (ie,"ACE" ...
List<string> a = new List<string>(); a.AddRange(new string[] { "a", "b", "a", "c", "d", "b" }); Dictionary<string, bool> Distinct = new Dictionary<string, bool>(); foreach (string value in a) { Distinct[value] = true; } List<string> b = new List<string>(); b...