Created
March 21, 2017 15:43
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| def pascalIndexInRowFast(row,index): | |
| lastVal=1 | |
| halfRow = (row>>1) | |
| #early out, is index < half? if so, compute to that instead | |
| if index > halfRow: | |
| index = halfRow - (halfRow - index) | |
| for i in range(0, index): | |
| lastVal = lastVal * (row - i) / (i + 1) | |
| return lastVal |
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