Created
February 3, 2017 05:14
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| import java.util.ArrayList; | |
| import java.util.List; | |
| public class FlattenArrays { | |
| List<Integer> temp = new ArrayList<Integer>(); | |
| public int[] flatArray(Object[] input){ | |
| if(input.getClass().isArray()){ | |
| for(int i=0;i<input.length;i++){ | |
| if(!input[i].getClass().isArray()){ | |
| temp.add((Integer) input[i]); | |
| } | |
| else{ | |
| recursive((Object[])input[i]); | |
| } | |
| } | |
| } | |
| int[] array = new int[temp.size()]; | |
| for(int i=0;i<temp.size();i++){ | |
| array[i] = temp.get(i); | |
| } | |
| return array; | |
| } | |
| public void recursive(Object[] input){ | |
| for(int j=0;j<input.length;j++){ | |
| if(!input[j].getClass().isArray()){ | |
| temp.add((Integer) input[j]); | |
| } | |
| else{ | |
| recursive((Object[])input[j]); | |
| } | |
| } | |
| } | |
| public static void main(String[] args) { | |
| Object[] array = new Object[2]; | |
| array[0] = new Object[3]; | |
| ((Object[]) array[0])[0] = 1; | |
| ((Object[]) array[0])[1] = 2; | |
| ((Object[]) array[0])[2] = new Object[1]; | |
| ((Object[])((Object[]) array[0])[2])[0] = 3; | |
| array[1] = 4; | |
| System.out.print("input : ["); | |
| for(int i=0;i<array.length;i++){ | |
| System.out.print(array[i]); | |
| if(i<array.length-1) | |
| System.out.print(","); | |
| } | |
| System.out.println("]"); | |
| System.out.println("To be clear the input is [[1,2,[3]],4]"); | |
| FlattenArrays obj = new FlattenArrays(); | |
| int[] arr = obj.flatArray(array); | |
| System.out.print("output : ["); | |
| for(int i=0;i<arr.length;i++){ | |
| System.out.print(arr[i]); | |
| if(i<arr.length-1) | |
| System.out.print(","); | |
| } | |
| System.out.print("]"); | |
| } | |
| } |
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