题目
"之"字形打印矩阵
java代码
package com.lizhouwei.chapter8;
/**
* @Description: "之"字形打印矩阵
* @Author: lizhouwei
* @CreateDate: 2018/4/28 22:53
* @Modify by:
* @ModifyDate:
*/
public class Chapter8_3 {
public void printMatrixZigZag(int[][] matrix) {
int tR = 0;
int tC = 0;
int dR = 0;
int dC = 0;
int endR = matrix.length - 1;
int endC = matrix[0].length - 1;
boolean UToD = false;
while (tR <= endR) {
printZigZag(matrix, UToD, tR, dR, tC, dC);
tR = tC == endC ? tR + 1 : tR;
tC = tC == endC ? tC : tC + 1;
dC = dR == endR ? dC + 1 : dC;
dR = dR == endR ? dR : dR + 1;
UToD = !UToD;
}
}
public void printZigZag(int[][] matrix, boolean UToD, int tR, int dR, int tC, int dC) {
if (UToD) {
while (tR != dR+1 ) {
System.out.print(matrix[tR++][tC--]+" ");
}
} else {
while (tR != dR+1) {
System.out.print(matrix[dR--][dC++]+" ");
}
}
System.out.println();
}
//测试
public static void main(String[] args) {
Chapter8_3 chapter = new Chapter8_3();
int[][] matrix = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}};
chapter.printMatrixZigZag(matrix);
}
}
结果