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generate a random number between x and y being integers #js
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| ~~(Math.random()*(y-x+1))+x | |
| Explanation: | |
| - Math.random(): [0, 1) | |
| - Math.random()*(y-x+1): [0, y-x+1) | |
| - (Math.random()*(y-x+1))+x: [x, y+1) | |
| - ~~(Math.random()*(y-x+1))+x: [x, y] |
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