二维数组的移动和遍历

(二维数组移动)

二维数组的左移和遍历

import java.util.Arrays;
import java.util.Scanner;

public class talk {

static char[][] ch = { { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I' },
		{ 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R' }, { 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', ' ' }

};

public static void main(String[] args) {
	Scanner scanner = new Scanner(System.in);
	System.out.println("Your first number:");
	int[] n = new int[2];
	for (int i = 0; i < 2; i++) {
		n[i] = scanner.nextInt();
	}
	System.out.println("You input is:" + Arrays.toString(n));

	for (int i = 0; i < n[0] - 1; i++) {
		char[] temp = ch[0];
		for (int j = 0; j < ch.length - 1; j++) {
			ch[j] = ch[j + 1];
		}
		ch[ch.length - 1] = temp;
	}

	for (int i = 0; i < ch.length; i++) {
		System.out.println(Arrays.toString(ch[i]));
	}

	for (int m = 0; m < n[1] - 1; m++) {
		for (int i = 0; i < ch.length; i++) {
			char temp = ch[i][0];
			for (int j = 0; j < ch[i].length - 1; j++) {
				ch[i][j] = ch[i][j + 1];
			}
			ch[i][ch[i].length - 1] = temp;
		}
	}
	for (int i = 0; i < ch.length; i++) {
		System.out.println(Arrays.toString(ch[i]));
	}

	Scanner sc = new Scanner(System.in);
	System.out.println("print your idea");
	char[] a = new char[100];
	String str;
	str = sc.nextLine();
	System.out.println(a);
	for (int i = 0; i < str.length(); i++) {
		a[i] = str.charAt(i);
		System.out.println(a[i] + " ");
	}
	for (int m = 0; m < a.length; m++) {
		for (int i = 0; i < ch.length; i++) {
			for (int j = 0; j < ch[i].length; j++) {
				if (ch[i][j] == a[m]) {
					System.out.println(i + "" + j);
				}
			}
		}
	}

}

}
没有进行注释，代码也还可以进行优化，数组移动遍历的时间复杂度有点高，可以变低，比如取余。