查找子串的索引位置算法

public static int subIndex(String[] str, String[] strSub) {int lenStr = str.length;int lenSub = strSub.length;if(lenSub > lenStr) return -1;int len = lenStr - lenSub + 1;for(int i = 0; i <len; i++) {int j = 0;for(; j < lenSub; j++) {if(str[i + j] != strSub[j]) break;}if(j == lenSub) return i;}return -1;}