Ravi Joshi Ravi Joshi - 2 months ago 14
Java Question

How to initialize all the elements of an array to any specific value in java

In

C/C++
we have
memset()
function which can fulfill my wish but in java how can i initialize all the elements to a specific value? Whenever we write
int[] array=new int[10];
, this simply initialize an array of size 10 having all elements equal to zero. I just want to change this initialization integer for one of my array. i.e. i want to initialize an array which has all elements equal to -1. Otherwise i have to put a
for
loop just after initialization, which ranges from index
0
to index
size-1
and inside that loop, i am assigning element to -1. Below is the code for more understanding-

int[] array = new int[10];
for (int i = 0; i < size; i++) {
array[i] = -1;
}


Am i going correct? Is there any other way for the same?

Answer

If it's a primitive type, you can use Arrays.fill():

Arrays.fill(array, -1);

[Incidentally, memset in C or C++ is only of any real use for arrays of char.]