You need to do these questions Thank you. This is for operating systems. Program

Question

You need to do these questions

Thank you. This is for operating systems. Program1 import java.util.* public class Overflow ( static final int INPUT SIZE-10; public static void main(Stringt] args) ( char[] vals new char[INPUT SIZE] scanner scan new scanner (System.in); String s1 getstring (scan) copyVals(s1,vals): string sub getSubstring(scan,vals): system.out.println( sub string: +sub) public static String getstring(Scanner scan) t System.out.print("Please type a string:"a string s scan.nextLine() return S public ??tatic void copyvais (String ?,char[] vals) { for (int í-o; î

Explanation / Answer

import java.util.*;

public class Overflow {

static final int INPUT_SIZE=10;

   

    public static void main(String[] args)

{

      char[] vals=new char[INPUT_SIZE];         //Array declaration

Scanner scan=new Scanner(System.in);

String s1=getString(scan);

copyVals(s1,vals);

String sub=getSubstring(scan,vals);

System.out.println("sub string : "+sub);

}

   

public static String getString(Scanner scan)

{

System.out.print("Please type a string : ");

String s=scan.nextLine();

return s;

}

public static void copyVals(String s, char[] vals)

{

for(int i=0;i<s.length();i++)     //Array index is i and 0<=i<length of string s

vals[i]=s.charAt(i);         //Occurrence of index variable i

}

public static String getSubstring(Scanner scan,char[] vals)

{

System.out.print("Starting Point : ");

int start =scan.nextInt();

System.out.print("Ending Point : ");

int end =scan.nextInt();

char[] newChars=getChars(start,end,vals); //Array declaration

return new String(newChars);

}

public static char[] getChars(int start, int end, char[] vals)

{

int sz=end-start;

char[] result=new char[sz];           //Array declaration

for(int i=0;i<sz;i++)                //Array index is I and 0<=i<sz

{

result[i]=vals[start+i];          //Occurrence of index variable i

}

return result;

}

}

   

2.3

V

for(int i=0;i<s.length();i++)

Here i is initialized to 0. Then in each iteration the value of I is incremented by 1, until i is less than length of string s.

for(int i=0;i<sz;i++)               

Here i is initialized to 0. Then in each iteration the value of I is incremented by 1, until i is less than sz (which is end –start).

3.1

for(int i=0;i<s.length();i++)

for(int i=0;i<sz;i++)               

3.2

for(int i=0;i<s.length();i++)             

vals[i]=s.charAt(i);    // Array limit of vals=10

Here if size of string s is greater than 10 then the loop limit could exceed the legal range of array index.

for(int i=0;i<sz;i++)               

result[i]=vals[start+i];    

Here also sz=end-start. If this value is greater than 10, then the loop limit could exceed the legal range of array index.

Related Questions

Navigate

• Browse (All)
• Browse Y
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.