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由题已知这是一个匹配题目，题目已经说了三阶幻方是给定的，经过镜像和旋转，镜像*2旋转*4；

总共八种方案，然后接收每次的数据去匹配（跳过0），如果匹配就输出匹配的数组，如果不匹配就输出-1。

题目给出了：492357816  旋转和镜像可以得到"672159834", "276951438", "294753618", "834159672", "438951276", "618753294", "816357492"

①存储8个固定字符串

②以字符串的形式接收给定数组

③进行比对，若为0则跳过，若不对应记录0，若对应记录下标

④输出结果，没找到ToMany；找到输出对应下标字符串

代码如下👇

public static void main(String[] args) {Scanner scan=new Scanner(System.in);String[] s1= {"672159834", "276951438", "294753618","492357816","834159672", "438951276", "618753294", "816357492"};String s2="";for (int i = 0; i < 3; i++) {s2+=scan.nextLine();}s2=s2.replaceAll(" ", "");System.out.println(s2);//测试点int count=0;//System.out.println(s2.charAt(1)!='0' && s1[0].charAt(1)==s2.charAt(1));测试for (int i = 0; i < s1.length; i++) {for (int j = 0; j < 9; j++) {if (s2.charAt(j)!='0' && s1[i].charAt(j)==s2.charAt(j)) {count++;}if (s2.charAt(j)!='0' && s1[i].charAt(j)!=s2.charAt(j)) {count=0;break;}}if (count>0) {count=i;break;}}if (count==0) {//本来判断赋值为-1.这里省略System.out.println("Too Many");}else {for (int i = 0; i < 9; i++) {System.out.print(s1[count].charAt(i)+" ");if (i==2) {System.out.println();}if (i==5) {System.out.println();}if (i==8) {System.out.println();}}}scan.close();}

进行优化👇

	public static void main(String[] args) {Scanner scan=new Scanner(System.in);String[] s1= {"672159834", "276951438", "294753618","492357816","834159672", "438951276", "618753294", "816357492"};String s2="";for (int i = 0; i < 3; i++) {s2+=scan.nextLine();}s2=s2.replaceAll(" ", "");int count=-1;//寄存下标或答案for (int i = 0; i < 8; i++) {if (compares(s2, s1[i])) {//比较成功进行赋值count=i;break;} }if (count==-1) {//比较失败输出  太多System.out.println("Too Many");}else {prints(s1, count);}scan.close();}public static boolean compares(String s1,String s2) {//比较for (int i = 0; i < 9; i++) {if (s1.charAt(i)!='0') {if (s1.charAt(i)!=s2.charAt(i)) {return false;}}}return true;}public static void prints(String[] s,int x) {//打印for (int i = 0; i < 9; i++) {System.out.print(s[x].charAt(i)+" ");if (i==2) {System.out.println();}if (i==5) {System.out.println();}if (i==8) {System.out.println();}}}