Update highest set bit

[rongyi]

Pull Request Template

Description

using rust leading_zero to calculate higest set bit

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• I ran cargo fmt just before my last commit.
• I ran cargo test just before my last commit and all tests passed.

Please make sure that if there is a test that takes too long to run ( > 300ms), you #[ignore] that or
try to optimize your code or make the test easier to run. We have this rule because we have hundreds of
tests to run; If each one of them took 300ms, we would have to wait for a long time.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.32%. Comparing base (a8491ae) to head (a92ea47).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #930      +/-   ##
==========================================
- Coverage   95.32%   95.32%   -0.01%     
==========================================
  Files         319      319              
  Lines       20895    20890       -5     
==========================================
- Hits        19919    19914       -5     
  Misses        976      976              

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[github-actions]

This pull request has been automatically marked as abandoned because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[github-actions]

Please ping one of the maintainers once you commit the changes requested or make improvements on the code. If this is not the case and you need some help, feel free to ask for help in our Gitter channel. Thank you for your contributions!