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  Adding array items  (Read 282 times)
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Offline kingroka123

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« Posted 2013-06-05 18:47:27 »

ok, so say i have an array of integers: int tX[h]; how would i dynamically add items to this array. like i press a button and it serches for the lowest array value (h) that equals 0 and puts a value into that slot.

-thanks  Huh

Offline GabrielBailey74
« Reply #1 - Posted 2013-06-05 19:28:15 »

ok, so say i have an array of integers: int tX[h]; how would i dynamically add items to this array. like i press a button and it serches for the lowest array value (h) that equals 0 and puts a value into that slot.

-thanks  Huh

I really can't make sense of what you're trying to accomplish here lol.

I want to help, can you give more of a explanation? O_o

Offline Riven
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« Reply #2 - Posted 2013-06-05 19:30:49 »

Really? This is hard to comprehend? He wants:

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for(int i=0; i<arr.length; i++) {
   if(arr[i]==0) {
      arr[i] = value;
      break;
   }
}

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Offline Troncoso

JGO Coder


Medals: 20



« Reply #3 - Posted 2013-06-05 20:00:58 »

When he says dynamically add items to the array, I thought he meant increasing the array size, in which case you could use an ArrayList. As far as the

like i press a button and it serches for the lowest array value (h) that equals 0 and puts a value into that slot.

Riven's solution is right.
Offline matheus23

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« Reply #4 - Posted 2013-06-05 20:01:24 »

(Wrapping it up into a function:)
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public static void replace(int[] array, int replaceWith, int value) {
    for (int i = 0; i < array.length; i++) {
        if (array[i] == replaceWith) {
            array[i] = value;
            break; // stop searching
        }
    }
}

Call it like that:
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int[] myarray = { 1, 2, 3, 4, 0, 6, 7, 99 };
replace(myarray, 0, 5);
// myarray now is { 1, 2, 3, 4, 5, 6, 7, 99 };

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