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added Typescript and Javascript examples in data_and_memory.md
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=== "JavaScript"
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```js title=""
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// JavaScript 的数组可以自由存储各种基本数据类型和对象
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// JavaScript 的基本数据类型中只有数字, 没有浮点数, 这里使用0.1作为示例
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const array = [0, 0.1, 'a', false]
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```
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=== "TypeScript"
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```typescript title=""
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// TypeScript 可以定义 JavaScript 数组的类型
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const numbers: number = new Array(5).fill(0);
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const decimals: number = new Array(5).fill(0.1);
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const characters: string = new Array(5).fill('a');
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const booleans: boolean = new Array(5).fill(true);
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```
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=== "C"
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