java 代码简化

for(int i=1;i<9;i=i+2){ if(i==1){ System.out.println(" "); }else if(i==3){ System.out.println(" "); }else if(i==5){ System.out.println(" "); }else if(i==7){ System.out.println(" "); } }for(int j=0;j<=

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