java - how to compare an string array? -

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i have code example. want compare strings contains paths. problem @ else part...in example have / , usr together..and want compare length after point different..thank help

string path1 = "/usr/libexec/warmd"; string path2 = "/usr/lib/libopen/xy";  string[] test1 = path1.split("/"); string[] test2 = path2.split("/");  arraylist<string[]> path1array = new arraylist<string[]>(); arraylist<string[]> path2array = new arraylist<string[]>(); path1array.add(test1); path2array.add(test2);  int len1 = test1.length; int len2 = test2.length; int len; if (len1 <= len2) {     len = len1; } else     len = len2; (int = 0; < len; i++) {      if ((test1[i]).equals(test2[i])) {         continue;     } else         break; }

you can find common prefix substring follows :

int minlen = math.min(test1.length, test2.length); string commonprefix = "";  (int = 0; < minlen; i++) {     if (test1[i].compareto(test2[i]) == 0) {         commonprefix += test1[i]+"/";     } else {         break;     } }

if don't string assignments, use stringbuffer instaed. paths :

string path1unique = path1.replacefirst(commonprefix, ""); string path2unique = path2.replacefirst(commonprefix, "");

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