| 1 | // Copyright 2017-2022 @polkadot/util authors & contributors
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| 2 | // SPDX-License-Identifier: Apache-2.0
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| 3 | export function arrayShuffle(input) {
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| 4 | const result = input.slice();
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| 5 | let curr = result.length;
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| 6 |
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| 7 | if (curr === 1) {
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| 8 | return result;
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| 9 | }
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| 10 |
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| 11 | while (curr !== 0) {
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| 12 | const rand = Math.floor(Math.random() * curr);
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| 13 | curr--;
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| 14 | [result[curr], result[rand]] = [result[rand], result[curr]];
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| 15 | }
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| 16 |
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| 17 | return result;
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| 18 | } |
| \ | No newline at end of file |