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- function hash(N) {
- N = Math.abs(N);
- N = N + '';
- N = N.replace('.','');
- let sum = 0;
- do {
- N = N + '';
- N = N.split('').map(Number);
- sum = N.reduce((sum, d) => sum + Number(d));
- N = sum;
- sum = 0;
- } while (N > 9)
- console.log(N);
- }
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