Here you can find the source of countOccurences(String haystack, String needle)
| Parameter | Description |
|---|---|
| haystack | a parameter |
| needle | a parameter |
public static int countOccurences(String haystack, String needle)
//package com.java2s; /**//from ww w.ja v a 2 s . c o m * Copyright (c) 2013 Jose Cruz-Toledo * 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. */ public class Main { /** * Count the number of occurences of needle in haystack in a case independent manner * @param haystack * @param needle * @return */ public static int countOccurences(String haystack, String needle) { int count = 0; int lastIndex = 0; haystack = haystack.toUpperCase(); needle = needle.toUpperCase(); while (lastIndex != -1) { lastIndex = haystack.indexOf(needle, lastIndex); if (lastIndex != -1) { count++; lastIndex += needle.length(); } } return count; } }