Question

I have a char [], and I want to set the value of every index to the same char value.
There is the obvious way to do it (iteration):

  char f = '+';
  char [] c = new char [50];
  for(int i = 0; i < c.length; i++){
      c[i] = f;
  }

But I was wondering if there’s a way that I can utilize System.arraycopy or something equivalent that would bypass the need to iterate. Is there a way to do that?

EDIT :
From Arrays.java

public static void fill(char[] a, int fromIndex, int toIndex, char val) {
        rangeCheck(a.length, fromIndex, toIndex);
        for (int i = fromIndex; i < toIndex; i++)
            a[i] = val;
    }

This is exactly the same process, which shows that there might not be a better way to do this.

+1 to everyone who suggested fill anyway – you’re all correct and thank you.

Answer 1

Try Arrays.fill(c, f) : Arrays javadoc