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#include <stdio.h>
#include <conio.h>
void main(){
for(int i=4;i>=1;i--){
for(int j=1;j<=i;j++){
printf("%d",j);
}
for(int j = 0; j < 5-i; j++){
printf(" ");
}
for(int j=i;j>=1;j--){
printf("%d",j);
}
printf("\n");
getch(0);
}
}
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