一个菜鸟的java求字谜算法

《数据结构与算法分析》的一个课后习题

我自己写的代码如下。。。

感觉效率也太低了。。。

有大神能指导指导吗 萌新路过

呃呃。。这是原题

编写一个程序求解字谜游戏问题 12341this2wats3oahg4fgdt

public class test02 {
static String str [][] = {{"t","h","i","s"},{"w","a","t","s"},{"o","a","h","g"},{"f","g","d","t"}};
public static void main(String args[]){
int index[] = jiemi("this");
jiemi01("this",index[0],index[1]);
jiemi01("this",index[2],index[3]);
}
public static int[] jiemi(String s){
int index[] = {0,0,0,0,0,0};
int num = 0;
char c[] = s.toCharArray();
String first = c[0]+"";
for(int i = 0;i<4;i++){
for(int j = 0;j<4;j++){
if(first.equals(str[i][j])){
index[num++] = i ;
index[num++] = j;
}
}
}
int t1 = index[0];
int t2 = index[1];
int t3 = index[2];
int t4 = index[3];
return index;
}
public static void jiemi01(String s,int a,int b){
String temp = "";
for(int j = b;j>=0;j--){
temp+=str[a][j];
}
isornot(temp,s);
temp = "";
for(int i = a;i>=0;i--){
temp+=str[i][b];
}
isornot(temp,s);
temp="";
for(int j = b;j<=3;j++){
temp+=str[a][j];
}
isornot(temp,s);
temp = "";
for(int i = a;i<=3;i++){
temp+=str[i][b];
}

isornot(temp,s);
temp = "";
int min = min(a,b);
int max = max(a,b);
int t = b;
for(int i = min;i>=0;i--){

temp+=str[i][t--];
}
isornot(temp,s);
temp = "";
t = a;
for(int i = max;i<=3;i++){

temp+=str[t--][i];
}
temp = "";
t = a;
for(int i = max;i<=3;i++){
temp+=str[t++][i];
}
temp = "";
t = a;
for(int i = max;i>=0;i--){
temp+=str[t++][i];
}
isornot(temp,s);
}
public static void isornot(String temp,String s){
if(temp.equals(s)){
System.out.println(temp+"是字谜");
System.exit(0);
}
}
public static int min(int a,int b){
if(a<b){
return a;
}
if(a>b){
return b;
}
else{
return a;
}
}
public static int max(int a,int b){
if(a<b){
return b;
}
if(a>b){
return a;
}
else{
return a;
}
}
}