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function kaprekarNumbers(p, q) { let answer = []; function findlandr(n) { let numstr = n.toString(); let d = numstr.length; let sqnum = n * n; let sqnumstr = sqnum.toString(); let dsq = sqnumstr.length; let sqnumarr = sqnumstr.split(''); let rd = d; let ld = dsq - rd; let larr = []; let rarr = []; for (let i = 0; i < ld; i++) { larr.push(sqnumarr[i]); } let l = parseInt(larr.join('')); for (let i = ld; i < dsq; i++) { rarr.push(sqnumarr[i]); } let r = parseInt(rarr.join('')); return [l, r]; } for (let i = p; i <= q; i++) { let lr = findlandr(i); if (lr[0] + lr[1] === i) { answer.push(i); } } if (p === 1) { answer.unshift(1); } if(!answer.length){ console.log('INVALID RANGE') }else{ console.log(answer.join(' ')); } }
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Modified Kaprekar Numbers
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javascript