2018-省赛-Java语言大学C组-字母矩阵_tqjcf

标题：字母阵列

仔细寻找，会发现：在下面的8x8的方阵中，隐藏着字母序列：“LANQIAO”。
SLANQIAO
ZOEXCCGB
MOAYWKHI
BCCIPLJQ
SLANQIAO
RSFWFNYA
XIFZVWAL
COAIQNAL

我们约定: 序列可以水平，垂直，或者是斜向；
并且走向不限（实际上就是有一共8种方向）。
上图中一共有4个满足要求的串。

下面有一个更大的（100x100）的字母方阵。
你能算出其中隐藏了多少个“LANQIAO”吗？

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GSOZTQKCCSDWGUWAUOZKNILGVNLMCLXQVBJENIHIVLRPVVXXFTHQUXUAVZZOFFJHYLMGTLANQIAOQQILCDCJERJASNCTLYGRMHGF
TSDFYTLVIBHKLJVVJUDMKGJZGNNSTPVLCKTOFMUEUFSVQIAUVHNVFTGBDDARPKYNNCUOYUAZXQJNOEEYKLFRMOEMHUKJTPETHLES
FKVINSLWEVGAGMKVFVIUBMYOIAFHLVNKNTYKTZWVXQWRWIGPENFXYDTKRVPKRTHMGHVYOCLDCKMEKRLGEKBYUCLOLYPAKPFSOREH
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BORWTNBISSLTVKBRTLWKRNCEDCNEGCIYJIPDICFAVNOISYAHWBLGMNFKXZYTTWJOBEPNMSJEJMHXVPGOJOLQQQVXFGEULANQIAOD
OQETOJHCZXGTUKIWGMEVVMXCURISUOFQSAWZWDMZWVYHZMPEIMWKJDGERODVVUXYRTYLCRGYQQOIOFZSSZRAIESWBQOAIQNALJNR
HEYWHPLLPCUEOCBAOWGAYEJZQJHLVNMVQNSQQGGUBOIMDPFLOVSQGBLYAMBRYJDVOXOQINLJAVYALAKHPKOYNKGXIISSJNGKHYMS
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DDAOBVCPOVODVJFLSNPJXHWQBHILWZAHQQMTQASNADZLZNXJLJMFCOUWOZJCMVVTYCKTUBABWLCEBNYWAMOLNBQQYBRUJCQCZALE
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DCZGKILMBFXIQQFEKJBIUDEMIFCANVGNYZAYSQFMNNQFEPZFUUVGTBKSMDXITBLANQIAOQUKTPNYPOWSQQYWWMJHSDYVFDJYXBAF
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请提交一个整数，不要填写任何多余的内容。

思路：这题呢用循环就可以了，有八个方向，列出这八个方向的数组坐标，写成一个方法，然后循环遍历这个二维数组，判断首字母为L的字符串；如果和给的字符串对比成功那么记录数加一；
要注意的是坐标查找越界问题。
代码如下：

//八个方向坐标
	static int[] xl ={-1,-1,-1,0,1,1,1,0};
	static int[] yl ={-1,0,1,1,1,0,-1,-1};
	static int n=100;//二维数组长度
	static char[][] cc=new char[n][n];	//字符矩阵
	static char[] bj ={'L','A','N','Q','I','A','O'};//需要查找的字符串
	static int count=0;		//记录符合条件的数
	public static void main(String[] args) {
		/*-----------输入部分----------------*/
		Scanner sr=new Scanner(System.in);
		for(int i=0;i<100;i++) {
			cc[i]=sr.next().toCharArray();	//变成字符串数组；
		}
		/*-----------输出寻找部分----------------*/
		for (int i = 0; i < cc.length; i++) {
			for (int j = 0; j <cc.length; j++) {
				if(cc[i][j]=='L'){
					check(i,j);//调用写的查找方法
				}
			}
		}
		System.out.println(count);
	}
	public static void check(int x,int y){
		for (int i = 0; i < 8; i++) {
			int x1=x+xl[i];	
			int y1=y+yl[i];
			int s=1;
			while((x1<n && x1>=0) && (y1<n && y1>=0) && cc[x1][y1]==bj[s] ){	//判断是否越界并字符是否全部相等
				if(s==6){
					count++;	//如何条件成立那么记录数+1；
					break;
				}
				s++;
				x1+=xl[i];
				y1+=yl[i];
			}
		}
	}
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结果：41