package com.songlei.hello.main;
public class one {
public static void main(String[] args) {
// TODO Auto-generated method stub
int bb[][]=new int[4][];
bb[0]=new int[1];
bb[1]=new int[2];
bb[2]=new int[3];
bb[3]=new int[4];
int i,j,k=0;
for(i=0;i<4;i++)
for(j=0;_j_<i+1;j++) //为什么这里的_j_<后面必须写成包含i的式子呐?
{bb[i][j]=k;
k++;
}
for(i=0;i<4;i++)
for(j=0;j<i+1;j++)
{System.out.print(bb[i][j]+" ");System.out.println();
}
}
}