Solution to K Least Numbers from Jobdu

27 Aug

Question (in Chinese):

Question Name: K Least Numbers

Question Description: Given an integer array and an integer K, find the sorted K least numbers in the original array.

Input: the input might contain multiple test cases. Each test case contains two lines. The first line includes two integers N and K (1 <= K <= N <= 200000). The second line includes N integers as the input array.

Output: For each test case, print the K least numbers in increasing order.

The solution with Java’s built-in priority queue is:

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