Webcount 是 char 数组，它只存储字符。 count[str.charAt(i)]++; 上面一行到底发生了什么？ count[str.charAt(i)] == 1 char array 的整数如何与 char 进行比较？ 粘贴下面的代码以找出字符串中的第一个非重复字符。它绝对有效。 谁能回答我上面提到的两个问题？ WebAug 18, 2024 · string s = "This is a string"; var groups = s.GroupBy (c => c).Where (g=>g.Count () > 1); foreach (var group in groups) { Console.WriteLine (group.Key); } Using IndexOf Method In this example, we're comparing the index of each character of the string.

C Programming: Find the repeated character in a given …

WebMar 9, 2024 · So initially, we will read a input string (c) at runtime using gets () function. This predefined function in C language reads one line of string everytime and stores it in a string pointer. It reads the input until it reaches either end-of-fine or a new line. char c [150]; printf (“Enter a string : “); gets (c); generac battery power systems

Find Duplicate characters in a string in C++ Prepinsta

WebDec 8, 2024 · step 1: sort the string step 2: remove all the whitespace step 3: copy std::string to char [] and loop through the array until different char and count on every dup char if count is more than one its duplicate. WebNov 18, 2024 · 1. Find the occurrences of character ‘a’ in the given string. 2. Find the No. of repetitions which are required to find the ‘a’ occurrences. 3. Multiply the single string … Web#include using namespace std; int main() { string str = "C++ Programming is awesome"; char checkCharacter = 'a'; int count = 0; for (int i = 0; i < str.size (); i++) { if (str [i] == checkCharacter) { ++ count; } } cout << "Number of " << checkCharacter << " = " << count; return 0; } Output Number of a = 2 dead or alive - that\u0027s the way i like it