Write code to Return the number of times a particular String occurs in another String.
//package com.book2s; public class Main { public static void main(String[] argv) { String content = "book2s.com"; String occurs = "o"; System.out.println(countOccurances(content, occurs)); }/*from w w w .j av a 2 s . co m*/ /** * Returns the number of times a particular String occurs in another String. * e.g. count the number of single quotes. */ public static int countOccurances(String content, String occurs) { return countOccurances(content, occurs, 0, 0); } private static int countOccurances(String content, String occurs, int pos, int countSoFar) { int equalsPos = content.indexOf(occurs, pos); if (equalsPos > -1) { countSoFar = countSoFar + 1; pos = equalsPos + occurs.length(); // dp("countSoFar="+countSoFar+" pos="+pos); return countOccurances(content, occurs, pos, countSoFar); } else { return countSoFar; } } }