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DiagonalMatrix.java
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/
DiagonalMatrix.java
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package github.clyoudu.matrix;
import org.apache.commons.lang3.StringUtils;
import java.util.ArrayList;
import java.util.List;
/**
* Create by IntelliJ IDEA
*
* @Author chenlei
* @DateTime 2018/5/16 10:18
* @Description DiagonalMatrix
*/
public class DiagonalMatrix<T> implements Matrix<T> {
Object[] data;
@Override
public void init(T[][] data) {
List<T> result = new ArrayList<>();
for (int i = 0; i < data.length; i++) {
for (int j = 0; j < data[i].length; j++) {
if(i == j){
T element = data[i][j];
result.add(element);
}
}
}
this.data = result.toArray();
}
@Override
public void print() {
List<String> rows = new ArrayList<>();
for (int i = 0;i < data.length;i ++) {
List row = new ArrayList();
for (int j = 0; j < data.length; j++) {
if(i==j){
row.add(data[i]);
}else{
row.add(data[0] instanceof Number ? 0 : null);
}
}
rows.add(StringUtils.join(row," "));
}
System.out.println(StringUtils.join(rows,"\n"));
}
}