DSA/knapsack.java at main · supravat02/DSA · GitHub

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import java.util.Scanner;
class Knapsack
{
public static void main(String[] args)
{
Scanner sc=new Scanner(System.in);
int object,m;
System.out.println("Enter the Total Objects");
object=sc.nextInt();
int weight[]=new int[object];
int profit[]=new int[object];
for(int i=0;i<object;i++)
{
System.out.println("Enter the Profit");
profit[i]=sc.nextInt();
System.out.println("Enter the weight");
weight[i]=sc.nextInt();
}
System.out.println("Enter the Knapsack capacity");
m=sc.nextInt();
double p_w[]=new double[object];
for(int i=0;i<object;i++)
{
p_w[i]=(double)profit[i]/(double)weight[i];
}
System.out.println("");
System.out.println("-------------------");
System.out.println("-----Data-Set------");
System.out.print("-------------------");
System.out.println("");
System.out.print("Objects");
for(int i=1;i<=object;i++)
{
System.out.print(i+"    ");
}
System.out.println();
System.out.print("Profit ");
for(int i=0;i<object;i++)
{
System.out.print(profit[i]+"    ");
}
System.out.println();
System.out.print("Weight ");
for(int i=0;i<object;i++)
{
System.out.print(weight[i]+"    ");
}
System.out.println();
System.out.print("P/W    ");
for(int i=0;i<object;i++)
{
System.out.print(p_w[i]+"  ");
}
for(int i=0;i<object-1;i++)
{
for(int j=i+1;j<object;j++)
{
if(p_w[i]<p_w[j])
{
double temp=p_w[j];
p_w[j]=p_w[i];
p_w[i]=temp;
int temp1=profit[j];
profit[j]=profit[i];
profit[i]=temp1;
int temp2=weight[j];
weight[j]=weight[i];
weight[i]=temp2;
}
}
}
System.out.println("");
System.out.println("-------------------");
System.out.println("--After Arranging--");
System.out.print("-------------------");
System.out.println("");
System.out.print("Objects");
for(int i=1;i<=object;i++)
{
System.out.print(i+"    ");
}
System.out.println();
System.out.print("Profit ");
for(int i=0;i<object;i++)
{
System.out.print(profit[i]+"    ");
}
System.out.println();
System.out.print("Weight ");
for(int i=0;i<object;i++)
{
System.out.print(weight[i]+"    ");
}
System.out.println();
System.out.print("P/W    ");
for(int i=0;i<object;i++)
{
System.out.print(p_w[i]+"  ");
}
int k=0;
double sum=0;
System.out.println();
while(m>0)
{
if(weight[k]<m)
{
sum+=1*profit[k];
m=m-weight[k];
}
else
{
double x4=m*profit[k];
double x5=weight[k];
double x6=x4/x5;
sum=sum+x6;
m=0;
}
k++;
}
System.out.println("Final Profit is="+sum);
}
}