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## Triangle
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### Instructions
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Create a function named `triangle` that takes a string and a number as arguments. Your function will return a string representing a triangle.
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The string will denote the characters which construct the triangle, and the number denotes its depth.
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### Example
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```js
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console.log(triangle('*', 5))
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```
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```
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*
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**
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***
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****
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*****
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```
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> No new line in last line
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### Notions
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- [Loops](https://nan-academy.github.io/js-training/examples/loops.js)
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- [Recursion](https://nan-academy.github.io/js-training/examples/recursion.js)
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