Created
August 19, 2022 10:17
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Unnest/flat nested arrays
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| export default function flatNestedArrays(array: unknown[]): unknown[] { | |
| let output: unknown[] = []; | |
| let stack = [...array]; | |
| handleFlatingNestedArrays({ stack, output }) | |
| return output.reverse(); | |
| } | |
| function handleFlatingNestedArrays({ stack, output }: { stack: unknown[], output: unknown[] }): void { | |
| if (Array.isArray(stack[stack.length-1])) { | |
| stack = [...stack.slice(0, stack.length-1), ...(stack[stack.length-1] as unknown[]).flat()]; | |
| return handleFlatingNestedArrays({ stack, output }); | |
| } | |
| output.push(stack[stack.length-1] as unknown); | |
| stack = [...stack.slice(0, stack.length-1)]; | |
| if (stack.length) return handleFlatingNestedArrays({ stack, output }); | |
| } |
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