Java Utililty Methods Array Permute

List of utility methods to do Array Permute

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Description

The list of methods to do Array Permute are organized into topic(s).

Method

double[][]permuteCols(double[][] ary, int[] idx)
permute Cols 
if (ary == null)
    return null;
assert ary[0].length == idx.length : "Number of columns must match permutation vector length: Got "
        + ary[0].length + " != " + idx.length;
double[][] res = new double[ary.length][ary[0].length];
for (int j = 0; j < ary[0].length; j++) {
    for (int i = 0; i < ary.length; i++)
        res[i][j] = ary[i][idx[j]];
...
ListpermuteList(List inList)
permute List 
List<String> result = new ArrayList<String>();
Random rand = new Random(System.currentTimeMillis());
int count = 0;
int currIndex = inList.size() - 1;
for (; count < inList.size(); count++) {
    int randPosition = rand.nextInt(currIndex + 1);
    String currLine = inList.get(randPosition);
    result.add(currLine);
...
double[][]permuteRows(double[][] ary, int[] idx)
permute Rows 
if (ary == null)
    return null;
assert ary.length == idx.length : "Number of rows must match permutation vector length: Got " + ary.length
        + " != " + idx.length;
double[][] res = new double[ary.length][ary[0].length];
for (int i = 0; i < ary.length; i++)
    res[i] = permute(ary[i], idx);
return res;
...
float[]permuteVector(float[] indexVector, int rotation)
permute Vector 
if (Math.abs(rotation) > indexVector.length) {
    rotation = rotation % indexVector.length;
float[] permutedVector = new float[indexVector.length];
int max = indexVector.length;
for (int x = 0; x < max; x++) {
    int newIndex = x + rotation;
    if (newIndex >= max) {
...