const diamond = value => { if (value < 1 || value % 2 === 0) return null; const side = []; const center = '*'.repeat(value); for (let i = value - 2; i > 0; i -= 2) { let rest = (value - i) / 2; side.push(' '.repeat(rest) + '*'.repeat(i) + ' '.repeat(rest)) } return [ ...[...side].reverse(), center, ...side].join('\n'); }
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Discussion on: Daily Challenge #2 - String Diamond
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