Fast iteration

I need to iterate over a map of 1 million values.
I am currently storing these values in an Int2ObjectArrayMap from fast utils, however even without doing anything but the iteration its taking 20ms to complete.

for (int i : int2ObjectArrayMap.keySet()) {
    int nothing = i+1;
}

for (int i : int2ObjectArrayMap.keySet()) {
    int nothing = i+1;
}

What would be the fastest way to iterate through these objects? I could switch to using something other than an Int2ObjectArrayMap if it would be faster.

JC|HCL

Java Community | Help. Code. Learn.•4w ago•

5 replies

𝙰pothicon

Fast iteration

for (int i : int2ObjectArrayMap.keySet()) {
    int nothing = i+1;
}

for (int i : int2ObjectArrayMap.keySet()) {
    int nothing = i+1;
}

What would be the fastest way to iterate through these objects? I could switch to using something other than an Int2ObjectArrayMap if it would be faster.

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