Difference between revisions of "Return Array"
Line 6: | Line 6: | ||
int[] n = {45,32,78,45,890};<BR> | int[] n = {45,32,78,45,890};<BR> | ||
returnArray(n);<BR> | returnArray(n);<BR> | ||
− | Output:1 | + | Output:1/2/3/4/5/ |
Line 23: | Line 23: | ||
{ | { | ||
} | } | ||
− | public static int[] returnArray( int[] | + | public static int[] returnArray( int[] array ) |
{ | { | ||
} | } | ||
Line 32: | Line 32: | ||
public static void main() | public static void main() | ||
{ | { | ||
− | int[] | + | int[] array = {45,32,78,45,890}; |
+ | int[] tempArray; | ||
− | for( int i = 0; i < | + | tempArray = returnArray(array); |
+ | |||
+ | for( int i = 0; i < tempArray.length; i++ ) // This will loop through every item in the array | ||
{ | { | ||
− | System.out.print( | + | System.out.print( tempArray[i] + "/" ); // Print the changed value |
} | } | ||
} | } | ||
Line 44: | Line 47: | ||
} | } | ||
</pre> | </pre> | ||
+ | |||
+ | <BR> | ||
+ | Now we will fill in returnArray. We know that it will be passed an array and we need to overwrite its contents with values increasing values starting at 1. We will then need to return the array: | ||
+ | |||
+ | <pre> | ||
+ | public static int[] returnArray( int[] array ) | ||
+ | { | ||
+ | for( int i = 0; i < array .length; i++ ) // This will loop through every item in the array | ||
+ | { | ||
+ | array [i] = i+1; // Change the items to i+1 - we don't want start at i because we don't want 0 | ||
+ | } | ||
+ | return n; // Return the changed array | ||
+ | } | ||
+ | </pre> | ||
<BR>Now put it all together:<BR> | <BR>Now put it all together:<BR> | ||
Line 50: | Line 67: | ||
public static void main() | public static void main() | ||
{ | { | ||
− | int[] | + | int[] array = {45,32,78,45,890}; |
+ | int[] tempArray; | ||
+ | |||
+ | tempArray = returnArray(array); | ||
− | for( int i = 0; i < | + | for( int i = 0; i < tempArray.length; i++ ) // This will loop through every item in the array |
{ | { | ||
− | System.out.print( | + | System.out.print( tempArray[i] + "/" ); // Print the changed value |
} | } | ||
} | } | ||
Line 60: | Line 80: | ||
public static int[] returnArray( int[] n ) | public static int[] returnArray( int[] n ) | ||
{ | { | ||
− | for( int i = 0; i < | + | for( int i = 0; i < array .length; i++ ) // This will loop through every item in the array |
{ | { | ||
− | + | array [i] = i+1; // Change the items to i+1 - we don't want start at i because we don't want 0 | |
} | } | ||
return n; // Return the changed array | return n; // Return the changed array |
Revision as of 11:51, 1 April 2010
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ProblemWrite a method which will take an array of ints as a parameter.
The method should change the contents of the array to 1-5. Call this method from main and then print the returned array in main.
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SideSectionTitle
An image or By Students section | |
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SolutionThe solution...
To solve this problem we are going to create a skeleton structure. We know that we will have two methods: main & returnArray. We know that returnArray will accept an integer array and return that array:
public static void main() { } public static int[] returnArray( int[] array ) { }
public static void main() { int[] array = {45,32,78,45,890}; int[] tempArray; tempArray = returnArray(array); for( int i = 0; i < tempArray.length; i++ ) // This will loop through every item in the array { System.out.print( tempArray[i] + "/" ); // Print the changed value } } public static int[] returnArray( int[] n ) { }
public static int[] returnArray( int[] array ) { for( int i = 0; i < array .length; i++ ) // This will loop through every item in the array { array [i] = i+1; // Change the items to i+1 - we don't want start at i because we don't want 0 } return n; // Return the changed array }
public static void main() { int[] array = {45,32,78,45,890}; int[] tempArray; tempArray = returnArray(array); for( int i = 0; i < tempArray.length; i++ ) // This will loop through every item in the array { System.out.print( tempArray[i] + "/" ); // Print the changed value } } public static int[] returnArray( int[] n ) { for( int i = 0; i < array .length; i++ ) // This will loop through every item in the array { array [i] = i+1; // Change the items to i+1 - we don't want start at i because we don't want 0 } return n; // Return the changed array } | ||
CodeSolutionCode goes here. Please DO NOT put your code in <pre> tags! |