13 lines
364 B
Java
13 lines
364 B
Java
function ethMult(m, n) {
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var o = !isNaN(m) ? 0 : ''; // same technique works with strings
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if (n < 1) return o;
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while (n > 1) {
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if (n & 1) o += m; // 3. integer odd/even? (bit-wise and 1)
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n >>= 1; // 1. integer halved (by right-shift)
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m += m; // 2. integer doubled (addition to self)
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}
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return o + m;
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}
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ethMult(17, 34)
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