Task

/* 
    Group the cities that by rotating them you obtain an outer city from the list.
    Input: ['Tokyo', 'London', 'Rome', 'Donlon', 'Kyoto', 'Paris', 'Orem']
    Output:
    [
        [ 'Tokyo', 'Kyoto' ],
        [ 'London', 'Donlon' ],
        [ 'Rome' ],
        [ 'Orem' ],
        [ 'Paris' ]
    ]
*/

// rome -> erom -> mero -> omer -> rome

AngularExampleRotations

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