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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 | #include <stdio.h> #include <stdlib.h> #include <string.h> struct node { int data; struct node *prev; struct node *next; }; struct node *head = 0; void goHome(int who, int step) { struct node *temp = head; while (temp->data != who) { temp = temp->next; } while (1) { for (int i = 0; i < step; i++) { temp = temp->next; } struct node *cur = temp->prev; cur->prev->next = temp; temp->prev = cur->prev; printf("%d ", cur->data); free(cur); if (temp->next == temp) { printf("%d ", temp->data); free(temp); break; } } } void connectToRing() { struct node *temp = head; while (temp->next != 0) { temp = temp->next; } head->prev = temp; temp->next = head; } void addToDLL(int _data) { struct node *cur; cur = (struct node *)malloc(sizeof(struct node)); cur->next = cur->prev = 0; cur->data = _data; if (head == 0) { head = cur; return; } else { // add cur to the end of DLL struct node *temp = head; while (temp->next != 0) { temp = temp->next; } temp->next = cur; cur->prev = temp; } } int main(void) { int n; scanf("%d", &n); for (int i = 1; i <= n; i++) { addToDLL(i); } connectToRing(); int who; int step; scanf("%d %d", &who, &step); goHome(who, step); return 0; } |
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