Java Utililty Methods Array Multiply

if (A.length != B.length)
    throw new IllegalArgumentException("dim A != dim B");
double[][] AB = buildZeroMatrix(A.length);
for (int i = 0; i < A.length; i++) {
    for (int j = 0; j < A.length; j++) {
        AB[i][j] = 0;
        for (int k = 0; k < A.length; k++) {
            AB[i][j] += A[i][k] * B[k][j];
...

assert !Float.isInfinite(n) : "Trying to multiply " + Arrays.toString(nums) + " by  " + n; 
for (int i = 0; i < nums.length; i++)
    nums[i] *= n;
return nums;

assert !Float.isInfinite(n) : "Trying to multiply " + Arrays.toString(nums) + " by  " + n; 
for (int i = 0; i < nums.length; i++)
    nums[i] *= n;
return nums;

if (a == null)
    throw new IllegalArgumentException("a should not be null");
int len = a.length;
byte[] result = new byte[len];
int carry = 0;
int i2 = byte2int(b);
for (int i = len - 1; 0 <= i; i--) {
    int i1 = byte2int(a[i]); 
...

double[] result = new double[vector.length];
for (int i = 0; i < vector.length; i++) {
    result[i] = vector[i] * factor;
return result;

for (int i = 0; i < a.length; i++) {
    a[i] *= m;
return a;

for (int i = 0; i < a.length; i++) {
    a[i] *= v;

if (a.length != b.length) {
    throw new IllegalArgumentException("Arrays must be equal length");
double[] c = new double[a.length];
for (int i = 0; i < a.length; i++) {
    c[i] = a[i] * b[i];
return c;
...

final double[] res = Arrays.copyOf(a, a.length);
for (int i = 0; i < res.length; ++i) {
    res[i] *= b[i];
return res;

double[] out = new double[a.length];
for (int i = 0; i < a.length; i++) {
    out[i] = a[i] * b[i];
return out;