62 lines
1.9 KiB
Java
62 lines
1.9 KiB
Java
/*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright © 2020 xrv <xrv@live.com>
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
package io.github.ehlxr.algorithm.match;
|
|
|
|
/**
|
|
* 字符串匹配：暴力匹配
|
|
*
|
|
* @author ehlxr
|
|
* @since 2022-03-12 13:36.
|
|
*/
|
|
public class BruteForce {
|
|
public static void main(String[] args) {
|
|
String s = "abdcfhjudfadf";
|
|
String p = "dcf";
|
|
|
|
System.out.println(bf(s, p));
|
|
}
|
|
|
|
public static int bf(String s, String p) {
|
|
int sl = s.length();
|
|
int pl = p.length();
|
|
|
|
for (int i = 0; i <= sl - pl; i++) {
|
|
int j = 0;
|
|
for (; j < pl; j++) {
|
|
if (s.charAt(i) == p.charAt(j)) {
|
|
i++;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
if (j == pl) {
|
|
return i - pl;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
}
|