1. [类型+方括号]表示法
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    let list:number[]=[1,2,3,4,5];
  2. 数组泛型
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    let list:Array<number>=[122,33,55,18];
  3. 用接口表示数组
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    interface NumberArray {
        [index: number]: number;
    }
    let fibonacci: NumberArray = [1, 1, 2, 3, 5];
  4. 类数组
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    interface IArguments {
        [index: number]: any;
        length: number;
        callee: Function;
    }
    function sum() {
        let args: IArguments = arguments;
    }
  5. any 在数组中的应用 
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    let list:any[]=['tom',18,false];