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c++ Programming Glossary: summingWhy is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array a sorted array faster than an unsorted array The code is summing up some independent terms the order should not matter. java..
Stuck on C++ functions and arrays [closed] http://stackoverflow.com/questions/13280921/stuck-on-c-functions-and-arrays divide by number of values. Others interpretted this as summing the values for each day and calculating the average for that..
Fastest possible algorithm to sum numbers up to N [closed] http://stackoverflow.com/questions/2624387/fastest-possible-algorithm-to-sum-numbers-up-to-n integer N without assuming N is positive. I made a loop summing from 1 to N but it is too slow. c c algorithm integer sum ..
Direct formula for summing XOR http://stackoverflow.com/questions/3932346/direct-formula-for-summing-xor formula for summing XOR I have to XOR numbers from 1 to N does there exist a direct..
Fast weighted random selection from very large set of values http://stackoverflow.com/questions/6052603/fast-weighted-random-selection-from-very-large-set-of-values is Select random value X with range 0 1 Iterate elements summing their weights until the sum is greater than X The element which..
Calculating normals in a triangle mesh http://stackoverflow.com/questions/6656358/calculating-normals-in-a-triangle-mesh So we can get the vertex normal vector by simply summing up all the face normals. In lighting calculations the normal.. be unit length i.e. normalized to be useable. So after summing up we normalize the newly found vertex normal and use that...
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