题目：打印出杨辉三角形（要求打印出10行题目：输入3个数a,b,c，按大小顺序输出。

题目：输入数组，最大的与第一个元素交换，最小的与最后一个元素交换，输出数组。

题目：有n个整数，使其前面各数顺序向后移m个位置，最后m个数变成最前面的m个数

题目：编写一个函数，输入n为偶数时，调用函数求1/2+1/4+...+1/n,当输入n为奇数时，调用函数1/1+1/3+...+1/n-Topic: Print out the Triangle (10 lines required to print out the Title: Enter the 3 numbers a, b, c, according to the order of output. Title: input array, the largest exchange with the first element, the smallest and the last element of the exchange, output array. Topic: There are n integers, to move back in front of the order m of the number of positions, finally becoming the foremost m m the number of number of topics: write a function, the input n is even, the call function evaluation 1/2+1/4+...+ 1/n, when the input n is odd, call the function 1/1+1/3+...+ 1/n