交换相邻两数 如果只是交换相邻两数,那么最少交换次数为该序列的逆序数. 交换任意两数 数字的总个数减去循环节的个数?? A cycle is a set of elements, each of which is in the place of another. So in example sequences { 2, 1, 4, 3}, there are two cycles: {1, 2} and {3, 4}. 1 is in the place where 2 needs to G
We have two integer sequences A and B of the same non-zero length. We are allowed to swap elements A[i] and B[i]. Note that both elements are in the same index position in their respective sequences. At the end of some number of swaps, A and B are b
[抄题]: We have two integer sequences A and B of the same non-zero length. We are allowed to swap elements A[i] and B[i]. Note that both elements are in the same index position in their respective sequences. At the end of some number of swaps, A and B
We have two integer sequences A and B of the same non-zero length. We are allowed to swap elements A[i] and B[i]. Note that both elements are in the same index position in their respective sequences. At the end of some number of swaps, A and B are b
求阶乘序列前N项和 #include <stdio.h> double fact(int n); int main() { int i, n; double item, sum; while (scanf("%d", &n) != EOF) { sum = 0; if (n <= 12) { for (i = 1; i <= n; i++) { item = fact(i); sum = sum + item; } } printf("%.0f
求平方根序列前N项和 #include <stdio.h> #include <math.h> int main() { int i, n; double item, sum; while (scanf("%d", &n) != EOF) { sum = 0; for (i = 1; i <= n; i++) { item = sqrt(i); sum = sum+item; } printf("sum = %.2f\n", s
Period Time Limit: 3000MS Memory Limit: 30000K Total Submissions: 14653 Accepted: 6965 Description For each prefix of a given string S with N characters (each character has an ASCII code between 97 and 126, inclusive), we want to know whether the
Testing the CATCHER Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 16131 Accepted: 5924 Description A military contractor for the Department of Defense has just completed a series of preliminary tests for a new defensive missile calle
import java.util.Arrays; import java.util.PriorityQueue; public class ch1_5_2求无序序列中第k小的元素 { public static void main(String[] args) { PriorityQueue<Integer> pq=new PriorityQueue<Integer>(); int a[]= new int[20]; int k=3; for(int i=0;i<a.leng
Given a non-empty integer array of size n, find the minimum number of moves required to make all array elements equal, where a move is incrementing n - 1 elements by 1. Example: Input: [1,2,3] Output: 3 Explanation: Only three moves are needed (remem