Given an array and a number k where k is smaller than size of array, we need to find the k’th smallest element in the given array.
The flag of the Netherlands consists of three colors: red, white and blue.Given balls of these three color arranged randomly in a line (the actual number of balls does not matter),the task is to arrange them such that all balls of the same color are together and their collective color groups are in the correct order.
最近开始学习jvm垃圾回收相关知识，大致做以下总结，并记录下不太懂得点