给定一个线性序列集，要求求出其中指定的第k小的数的值和位置.如给定n个元素和一个整数i，1≤i≤n，输出这n个元素中第i小元素的值及其位置；-A linear sequence of a given set of requirements specified in paragraph k of which obtained a small number of value and location. If the given element and an integer n i, 1 ≤ i ≤