Created
March 19, 2015 21:28
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Function to find the common prefix in a list of strings
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| public class PreFixer { | |
| public static void main(String[] args) { | |
| if(args.length < 1) { | |
| System.out.println("invalid arguments"); | |
| return; | |
| } | |
| String commongPrefix = getCommonPrefix(args); | |
| System.out.println("Common Prefix for list is : " + commongPrefix); | |
| } | |
| private static String getCommonPrefix (String[] list){ | |
| int matchIndex = recursiveChecker(0, list); | |
| return list[0].substring(0, matchIndex); | |
| } | |
| private static int recursiveChecker(int strIndex, String[] list){ | |
| for(int x=0; x<list.length; x++) { | |
| if(strIndex >= list[x].length()){ | |
| return strIndex; | |
| } | |
| if(list[0].charAt(strIndex) != list[x].charAt(strIndex)) { | |
| return strIndex; | |
| } | |
| } | |
| return recursiveChecker(strIndex + 1, list); | |
| } | |
| } |
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