45 lines
942 B
JavaScript
45 lines
942 B
JavaScript
var list = [];
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const subsequence = (input, output = '') => {
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if (input === "") {
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if (output !== '' && !list.includes(output)) list.push(output);
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return;
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}
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subsequence(input.substr(1), output + input.charAt(0));
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subsequence(input.substr(1), output);
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}
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subsequence('abc');
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console.log('abc', list);
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list = [];
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subsequence('aaa');
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console.log('aaa', list);
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list = [];
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subsequence('hello');
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console.log('hello', list);
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/*
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to run the file:
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Node sequence.js
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result
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abc [
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'abc', 'ab',
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'ac', 'a',
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'bc', 'b',
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'c'
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]
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aaa [ 'aaa', 'aa', 'a' ]
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hello [
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'hello', 'hell', 'helo', 'hel',
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'heo', 'he', 'hllo', 'hll',
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'hlo', 'hl', 'ho', 'h',
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'ello', 'ell', 'elo', 'el',
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'eo', 'e', 'llo', 'll',
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'lo', 'l', 'o'
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]
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*/
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