[Enhancement] Using static init map

[ChineseTony]

Before Creating the Enhancement Request

• I have confirmed that this should be classified as an enhancement rather than a bug/feature.

Summary

Using static init map and give the map initialCapacity len decrease resizing map

Motivation

Using static init map can imporve performance, ranther than Using Double Brace Initialization init map

Describe the Solution You'd Like

Using static init map can imporve performance, ranther than Using Double Brace Initialization init map

Describe Alternatives You've Considered

Using static init map can imporve performance, ranther than Using Double Brace Initialization init map

Additional Context

Using static init map can imporve performance, ranther than Using Double Brace Initialization init map