The one-dimensional array negative to positive
public class Demo {
public static void main(String[] args) {
double[] num=new double[] {12.0,-34.0,0.01,-7.38,0};
int length=num.length;//提升性能
for(int i=0;i<length;i++) {
if(num[i]<0) {
num[i]=0-num[i];
}
System.out.println(num[i]);
}
}
}
The results are as follows