Concatenating two int[]

Question

There are easy solutions for concatenating two String[] or Integer[] in java by Streams. Since int[] is frequently used.

Answer 1

Use for loops, to avoid using toArray().

int[] e = new int[c.length+d.length];
int eIndex = 0;
for (int index = 0; index < c.length; index++){
    e[eIndex] = c[index];
    eIndex++;
}
for (int index = 0; index < d.length; index++){
    e[eIndex] = d[index];
    eIndex++;
}