10 lines
228 B
JavaScript
10 lines
228 B
JavaScript
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const fs = require('fs');
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const input = fs.readFileSync('input.txt', 'utf-8').split('\n');
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let counter = 0;
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for (let str of input) {
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if (str.match(/(\w{2}).*\1/g) && str.match(/(\w)\w\1/g))
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counter++;
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}
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console.log(counter)
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