Known a string s, design an algorithm to count the number of occurrences of a character in the string s

CodePudding user response:

 using System; 
using System.Linq; 

The namespace ConsoleApp16 
{
Class Program 
{
The static void Main (string [] args) 
{
String STR="123456781 abcdef2"; 
Char c='1'; 

Int result=STR. ToCharArray (). The Select (p=& gt; P==c). The Count (p=& gt; P); 
In the Console. WriteLine (" {0} {1} {2} "the number is, STR, c, result); 
Console.ReadLine(); 
} 
} 
} 

And this is the c # way,

 DECLARE @ STR NVARCHAR (MAX), @ c NCHAR (1) 
The SET @ STR='123456781 abcdef2'; 
SET @ c='1' 

SELECT COUNT (1) AS the result 
The FROM (
SELECT SUBSTRING (@ STR, sv. Number, 1) AS c 
FROM the MASTER. The dbo. Spt_values AS sv 
WHERE the sv. [type]='P AND sv. Number> 0 
) AS tt 
WHERE tt. C=@ c 
/* 
The result 
2 
*/

This is essentially a wording,

CodePudding user response:

Can be written in C