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Finding the pair number of a sum in java

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public class Test 
 public static void pair(int array[], int data) 
 for (int i = 0; i < array.length - 1; i++) 
 for (int j = i + 1; j < array.length; j++) 
 if (array[i] + array[j] == data) 
 System.out.println("Pair: " + i + " and " + j); 
 return; 
 
 
 
 System.out.println("Pair not found"); 
 
 

public class Main 
 
 public static void main(String[] args) 
 
 int[] num = 1,6,8,12,19; 
 Test.pair(num,20); 
 

I am trying to create a pair of given sum for example, it would output from the middle numbers to outer numbers e.g. 8,12 and 1,19. But my current output is just 0 and 4

java sum

share|improve this question

asked Mar 22 at 1:54

davyJdavyJ

102

add a comment | 

0

public class Test 
 public static void pair(int array[], int data) 
 for (int i = 0; i < array.length - 1; i++) 
 for (int j = i + 1; j < array.length; j++) 
 if (array[i] + array[j] == data) 
 System.out.println("Pair: " + i + " and " + j); 
 return; 
 
 
 
 System.out.println("Pair not found"); 
 
 

public class Main 
 
 public static void main(String[] args) 
 
 int[] num = 1,6,8,12,19; 
 Test.pair(num,20); 
 

I am trying to create a pair of given sum for example, it would output from the middle numbers to outer numbers e.g. 8,12 and 1,19. But my current output is just 0 and 4

java sum

share|improve this question

asked Mar 22 at 1:54

davyJdavyJ

102

add a comment | 

public class Test 
 public static void pair(int array[], int data) 
 for (int i = 0; i < array.length - 1; i++) 
 for (int j = i + 1; j < array.length; j++) 
 if (array[i] + array[j] == data) 
 System.out.println("Pair: " + i + " and " + j); 
 return; 
 
 
 
 System.out.println("Pair not found"); 
 
 

public class Main 
 
 public static void main(String[] args) 
 
 int[] num = 1,6,8,12,19; 
 Test.pair(num,20); 
 

I am trying to create a pair of given sum for example, it would output from the middle numbers to outer numbers e.g. 8,12 and 1,19. But my current output is just 0 and 4

java sum

share|improve this question

asked Mar 22 at 1:54

davyJdavyJ

102

public class Test 
 public static void pair(int array[], int data) 
 for (int i = 0; i < array.length - 1; i++) 
 for (int j = i + 1; j < array.length; j++) 
 if (array[i] + array[j] == data) 
 System.out.println("Pair: " + i + " and " + j); 
 return; 
 
 
 
 System.out.println("Pair not found"); 
 
 

public class Main 
 
 public static void main(String[] args) 
 
 int[] num = 1,6,8,12,19; 
 Test.pair(num,20); 
 

share|improve this question

asked Mar 22 at 1:54

davyJdavyJ

102

share|improve this question

asked Mar 22 at 1:54

davyJdavyJ

102

asked Mar 22 at 1:54

davyJdavyJ

102

asked Mar 22 at 1:54

davyJdavyJ

102

1 Answer
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votes

0

You are only outputting your loop variables i & j. You need to access the array at those positions:

System.out.println("Pair: " + array[i] + " and " + array[j]);

This will only print out 1 matching pair because of the return. If you need more, you'll need to remove that & use a variable to control whether or not the message gets printed.

share|improve this answer

edited Mar 22 at 2:00

answered Mar 22 at 1:57

ItsPeteItsPete

1,0301328

add a comment | 

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0

You are only outputting your loop variables i & j. You need to access the array at those positions:

System.out.println("Pair: " + array[i] + " and " + array[j]);

This will only print out 1 matching pair because of the return. If you need more, you'll need to remove that & use a variable to control whether or not the message gets printed.

share|improve this answer

edited Mar 22 at 2:00

answered Mar 22 at 1:57

ItsPeteItsPete

1,0301328

add a comment | 

0

You are only outputting your loop variables i & j. You need to access the array at those positions:

System.out.println("Pair: " + array[i] + " and " + array[j]);

This will only print out 1 matching pair because of the return. If you need more, you'll need to remove that & use a variable to control whether or not the message gets printed.

share|improve this answer

edited Mar 22 at 2:00

answered Mar 22 at 1:57

ItsPeteItsPete

1,0301328

add a comment | 

You are only outputting your loop variables i & j. You need to access the array at those positions:

System.out.println("Pair: " + array[i] + " and " + array[j]);

This will only print out 1 matching pair because of the return. If you need more, you'll need to remove that & use a variable to control whether or not the message gets printed.

share|improve this answer

edited Mar 22 at 2:00

answered Mar 22 at 1:57

ItsPeteItsPete

1,0301328

System.out.println("Pair: " + array[i] + " and " + array[j]);

share|improve this answer

edited Mar 22 at 2:00

answered Mar 22 at 1:57

ItsPeteItsPete

1,0301328

answered Mar 22 at 1:57

ItsPeteItsPete

1,0301328

answered Mar 22 at 1:57

ItsPeteItsPete

1,0301328