- find string
- strpos
- IndexOf
- InStr
- FIND
- SEARCH
1 C++[ | ]
C++ find() 문서를 참고하십시오.
C++
Copy
#include <iostream>
using namespace std;
int main() {
string s = "Hello World!";
int pos = s.find("H");
cout << pos << endl; // 0
cout << s.find("ll") << endl; // 2
cout << s.find("e") << endl; // 1
cout << s.find("z") << endl; // 18446744073709551615
}
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2 C#[ | ]
C#
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string str = "Hello World!";
int pos = str.IndexOf("ll"); // 2
C#
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"Hello mate".IndexOf("e"); // 1
"Hello mate".IndexOf("e", 4); // 9
"word".IndexOf("z"); // -1
3 Excel[ | ]
- 1-based index
PHP
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=FIND("h", "hello world")
=SEARCH("h", "hello world")
// 1
=FIND("ll", "hello world")
=SEARCH("ll", "hello world")
// 3
=FIND("z", "hello world")
// #VALUE!
4 Go[ | ]
Go strings.Index() 문서를 참고하십시오.
Go
Copy
package main
import (
"fmt"
"strings"
)
func main() {
fmt.Println(strings.Index("hello world", "h")) // 0
fmt.Println(strings.Index("hello world", "l")) // 2
fmt.Println(strings.Index("hello world", "ll")) // 2
fmt.Println(strings.Index("hello world", "z")) // -1
}
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5 Java[ | ]
Java
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String str = "Hello World!";
int pos = str.indexOf("ll"); // 2
Java
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"Hello mate".indexOf("e"); // 1
"Hello mate".indexOf("e", 4); // 9
"word".indexOf("z"); // -1
6 JavaScript[ | ]
JavaScript
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console.log("Hello mate".indexOf("e")); // 1
console.log("Hello mate".indexOf("e",4)); // 9
console.log("Hello mate".indexOf("z",4)); // -1
▶ | 1 |
▶ | 9 |
▶ | -1 |
7 Lisp[ | ]
lisp
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(search "e" "Hello mate") ; returns 1
(search "z" "word") ; returns NIL
8 Objective-C[ | ]
Objective-C
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[@"do you remember?" rangeOfString:@"you"]; // returns NSMakeRange(3, 3)
[@"do you remember?" rangeOfString:@"e" options:0 range:NSMakeRange(11, 5)]; // returns NSMakeRange(13, 1)
[@"do you remember?" rangeOfString:@"z"]; // returns NSMakeRange(NSNotFound, 0)
Objective-C
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#define STRPOS(str, x) [Util strpos:str sub:x]
+(int) strpos:(NSString*)str sub:(NSString*)sub {
int pos = [str rangeOfString:sub].location;
return (pos == NSNotFound)? -1 : pos;
}
NSLog(@"%d", STRPOS(@"do you remember?", @"you")); // 3
NSLog(@"%d", STRPOS(@"do you remember?", @"e")); // 8
NSLog(@"%d", STRPOS(@"do you remember?", @"z")); // -1
9 Perl[ | ]
Perl
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index("do you remember?", "you"); # returns 3
index("do you remember?", "e", 11); # returns 13
index("word", "z"); # returns -1
10 PHP[ | ]
PHP strpos() 문서를 참고하십시오.
PHP
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var_dump( strpos("do you remember?", "d") ); // int(0)
var_dump( strpos("do you remember?", "you") ); // int(3)
var_dump( strpos("do you remember?", "e", 11) ); // int(13)
var_dump( strpos("word", "z") ); // bool(false)
if(strpos("word", "z") === false) {
echo "not exist";
}
11 Python[ | ]
Python
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"do you remember?".find("you") # returns 3
"do you remember?".find("e", 11) # returns 13
"word".find("z") # returns -1
"word".index("z") # raises ValueError
12 Ruby[ | ]
Ruby
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"do you remember?".index("you") # returns 3
"do you remember?".index("e", 11) # returns 13
"word".index("z") # returns nil
13 Scheme[ | ]
scheme
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(use-modules (srfi srfi-13))
(string-contains "Hello mate" "e") ; returns 1
(string-contains "word" "z") ; returns #f
14 VB[ | ]
vbnet
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InStr("Hello mate", "e") ' returns 2
InStr(5, "Hello mate", "e") ' returns 10
InStr("word", "z") ' returns 0