19 lines
710 B
JavaScript
19 lines
710 B
JavaScript
function mult(num1,num2){
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var a1 = num1.split("").reverse();
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var a2 = num2.split("").reverse();
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var aResult = new Array;
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for ( iterNum1 = 0; iterNum1 < a1.length; iterNum1++ ) {
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for ( iterNum2 = 0; iterNum2 < a2.length; iterNum2++ ) {
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idxIter = iterNum1 + iterNum2; // Get the current array position.
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aResult[idxIter] = a1[iterNum1] * a2[iterNum2] + ( idxIter >= aResult.length ? 0 : aResult[idxIter] );
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if ( aResult[idxIter] > 9 ) { // Carrying
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aResult[idxIter + 1] = Math.floor( aResult[idxIter] / 10 ) + ( idxIter + 1 >= aResult.length ? 0 : aResult[idxIter + 1] );
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aResult[idxIter] -= Math.floor( aResult[idxIter] / 10 ) * 10;
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}
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}
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}
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return aResult.reverse().join("");
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}
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