How to configure Grunt to minify files separately

There are some .js files in folder static/js/:

1. a.js
2. b.js
3. c.js

How can I configure Grunt to get the below files:

1. a.min.js
2. b.min.js
3. c.min.js

As far, I have to type a specific file name:

  min: {
    dist: {
    src:  'js/**/*.js',
    dest: 'js/min/xxx.min.js'
   }
 }

I had the same problem and found a solution that would automatically minify all my scripts separately:

uglify: {
      build: {
        files: [{
            expand: true,
            src: '**/*.js',
            dest: 'build/scripts',
            cwd: 'app/scripts'
        }]
      }
    }