when the guess is larger you use a variable size make and allocate
In databases, Top K means “give me the K best rows, ordered by some column or value.” Commonly that means “the most recent rows,” “the highest scores,” or “the largest values.”，这一点在新收录的资料中也有详细论述
with everything you've written there.，详情可参考PDF资料
Bitter times for cocoa farmers as chocolate market slumps