class Test{
public static void main(String[] args) throws IOException{
double[] num = new double[]{1.2,4.5,2.4,5.5};
for(int i=0; i<num.length; i++){
for(int j=i+1; j<num.length; j++){
if( num[j]<num[i] ){
double temp = num[i];
num[i] = num[j];
num[j] = temp;
}
}
}
for(int i=0;i<num.length;i++){
System.out.println(num[i]);
}
}
}
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