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package arr;
import java.util.Random;
public class F {
private static Random rng = new Random(); //(9562724l);
public static void randomise(double probs[])
{
double z = 0;
for (int i = 0; i < probs.length; ++i)
{
probs[i] = 3 + rng.nextDouble();
z += probs[i];
}
for (int i = 0; i < probs.length; ++i)
probs[i] /= z;
}
public static void l1normalize(double [] a){
double sum=0;
for(int i=0;i<a.length;i++){
sum+=a[i];
}
if(sum==0){
return ;
}
for(int i=0;i<a.length;i++){
a[i]/=sum;
}
}
public static void l1normalize(double [][] a){
double sum=0;
for(int i=0;i<a.length;i++){
for(int j=0;j<a[i].length;j++){
sum+=a[i][j];
}
}
if(sum==0){
return;
}
for(int i=0;i<a.length;i++){
for(int j=0;j<a[i].length;j++){
a[i][j]/=sum;
}
}
}
public static double l1norm(double a[]){
double norm=0;
for(int i=0;i<a.length;i++){
norm += a[i];
}
return norm;
}
public static int argmax(double probs[])
{
double m = Double.NEGATIVE_INFINITY;
int mi = -1;
for (int i = 0; i < probs.length; ++i)
{
if (probs[i] > m)
{
m = probs[i];
mi = i;
}
}
return mi;
}
}
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