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Along with being a magician, you have also taught yourself the art o

Along with being a magician, you have also taught yourself the art o

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Along with being a magician, you have also taught yourself

the art of trickery by watching open courseware videos on

Trickery 101. You have achieved mastery in converting “I

owe you’s” into “You owe me’s” In the program below, you

are given an array of integers called ‘iou’. You have to

write code which will negate every number in the array

What we expect: If the array ‘iou’ contains [2,4,6], you

must change it to contain [-2,-4,-6]. You do not need to

create a new array to store the result. Replace numbers in-

place in the array \'iou\' itself, with their negated values.

You do not need to print anything in this exercise.

Learning outcomes: After completing this exercise you

should have learned how to iterate across an array, and

how to read as well as write values into the array.

------------------------------------

import java.util.Scanner;

public class Trickster {

public static void main(String args[]) {

Scanner scanner = new Scanner(System.in);

System.out.println(\"Enter a few positive integers,

separated with spaces, which represent the IOU\'s you owe

to friends: \");

String lineIous = scanner.nextLine();

int iou[] = getIntArrFromArgs(lineIous);

///{

//write your code hare

//start

///}

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print(iou);

}

private static void print(int[] iou) {

StringBuffer buff = new StringBuffer(\"\");

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

buff.append(iou[i] + \" \");

}

System.out.println(buff.toString().trim());

}

private static int[] getIntArrFromArgs(String lineIous) {

String args[] = lineIous.split(\"\\\\s+\");

int iqs[] = new int[args.length];

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

iqs[i] = Integer.parseInt(args[i]);

if(iqs[i] < 0) {

String msg = \"You must enter positive integers.

\" + args[i] + \" is not a positive integer\";

throw new IllegalArgumentException(msg);

}

return iqs;

}

Solution

import java.util.Scanner;

public class Trickster {

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Along with being a magician, you have also taught yourself the art of trickery by watching open courseware videos on Trickery 101. You have achieved mastery in converting “I owe you’s” into “You owe me’s” In the program below, you are given an array of integers called ‘iou’. You have to write code which will negate every number in the array What we expect: If the array ‘iou’ contains [2,4,6], you must change it to contain [-2,-4,-6]. You do not need to create a new array to store the result. Replace nu mbers inplace in the array \'iou\' itself, with their negated values. You do not need to print anything in this exercise. Learning outcomes: After completing this exercise you should have learned how to iterate across an array, and how to read as well as write values into the array. -----------------------------------import java.util.Scanner; public class Trickster { public static void main(String args[]) { Scanner scanner = new Scanner(System.in); System.out.println(\"Enter a few positive integers, separated with spaces, which represent the IOU \'s you owe to friends: \"); String lineIous = scanner.nextLine(); int iou[] = getIntArrFromArgs(lineIous); ///{ //write your code hare //start // ///} print(iou); } private static void print(int[] iou) { StringBuffer buff = new StringBuffer( \"\"); for(int i=0; i ...
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