Can any one fix errors(exceptions)......

Question

import java.util.Scanner;
class Waste{
public static void main(String args[]){
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
char AL,AR,BU,BD;
int z=0,y=0;
int p=0;
int k=sc.nextInt();
char a[]=new char[k];
char b[]=new char[k];
char t;
String s=sc.nextLine();
b[0]=a[0];
for(int i=0;i<k;i++)
{
a[i]=s.charAt(i);

if((a[0]=='L')|(a[0]=='R'))
if((a[i]!='L')|(a[i]!='R'))
{
p++;
b[p]=a[i];
t=a[0];
a[0]=a[i];
a[i]=t;
}
if((a[0]=='U')|(a[0]=='D'))
if((a[i]!='U')|(a[i]!='D'))
{
p++;
b[p]=a[i];
t=a[0];
a[0]=a[i];
a[i]=t;
}
}
for(int i=0;i<k;i++)
{
if(b[i]=='\0')
break;
switch(b[i])
{
case 'R':
z+=1;
break;
case 'L':
z-=1;
break;
case 'U':
y+=1;
break;
case 'D':
y-=1;
break;
}
}
System.out.println("("+z+","+y+")")

Answer 1

first, there is not end of code and semicolon

System.out.println("("+z+","+y+")"); //semicolon ;
} //added
} //added

Answer 2

zemiak its not a problem rest of code i.e., ; }} are not there because there were limit of 2400 words only
I meant there were problem in exception so concentrate on exceptions not in run time errors

Answer 3

for(int i=0;i<k;i++)

Here instead of k you should use, String length.. s.length().
Otherwise you get Exception if your string length is less than k.. Or invalid result if greater than k..

May be you are know this..
| is bitwise Or operator
|| is logical Or operator.

Edit:
You can save code in playground and share link that help to identify errors easily... See this link to know how to share..
https://www.sololearn.com/post/75089/?ref=app

Answer 4

Input:LLLRUUD
output:LU
input:LULUDR
Output:LULUR
The firstly point at origin and again
It can't make multimoves on same axis consequently...

Answer 5

V Chandu
//use correct scan int, for int\n
// int n=sc.nextInt();
int n=sc.nextInt(); sc.nextLine();

...
//after last scan, a[0] is empty
// b[0]=a[0];
b[0]=s.charAt(0);

...
if( (a[0]=='L')|(a[0]=='R')) //works but standard is ||
{ // added, necessary because two if and one else
// if((a[i]!='L') | (a[i]!='R'))
if ((a[i]!='L') && (a[i]!='R')) // AND instead
{... }
} else // added
if( (a[0]=='U')|(a[0]=='D'))
// if((a[i]!='U') | (a[i]!='D'))
if ((a[i]!='U') && (a[i]!='D')) // AND instead
{...}