初始化顺序表L；依次采插入a,b,c,d,e元素；输出顺序表L；输出顺序表L长度；判断顺序表L是否为空；输出顺序表L的第三个元素；输出元素’a’的位置；在第四元素位置上插入’f’元素；输出顺序表L；

删除顺序表L的第三个元素；输出顺序表L；

-The initialization sequence table L　followed by mining into the A, B, C, D, e elements　the output sequence table L　the output sequence table L length　determine the sequence table L is empty　the output sequence table L third elements　the output element　a　position　in the fourth element position of insert　f　the output sequence table L elements　Remove the sequence table L third elements　the output sequence table L