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 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175
| #include<stdio.h> #include<stdlib.h> #include<time.h>
inline void swap(int &a, int &b) { int tmp = a; a = b; b = tmp; }
void bubbleSort(int ary[], int len) { for(int i = 0; i < len; i++) for(int j = 0; j < len-i; j++) if(ary[j] > ary[j+1]) swap(ary[j], ary[j+1]); return; }
void selectSort(int ary[], int len) { for(int i = 0; i < len; i++) { int minIndex = i; for(int j = i; j < len; j++) if(ary[j] < ary[minIndex]) minIndex = j; swap(ary[i], ary[minIndex]); } return; }
inline void _insertSort(int ary[], int len, int gap, int startIndex) { for(int i = startIndex + 1; i < len; i += gap) for(int j = i-gap; j >= startIndex && ary[j] > ary[j+gap]; j -= gap) swap(ary[j], ary[j+gap]); return; }
void insertSort(int ary[], int len) { _insertSort(ary, len, 1, 0); }
void quickSort(int ary[], int len) { if(len < 2) return; if(len == 2) { if(ary[0] > ary[1]) swap(ary[0], ary[1]); return; } int left = 0; int right = len - 1; while(left < right) { while(ary[right] >= ary[0] && left < right) right--; while(ary[left] <= ary[0] && left < right) left++; swap(ary[left], ary[right]); } swap(ary[0], ary[right]); quickSort(ary, right); quickSort(ary+right+1, len-right-1); return; }
inline void siftDown(int ary[], int len, int startIndex) { int i = startIndex; for(int j = i*2+1; j < len; j = j*2+1) { if(j+1 < len && ary[j] < ary[j+1]) j++; if(ary[i] < ary[j]) swap(ary[i], ary[j]); else return; i = j; } return; }
void heapSort(int ary[], int len) { for(int i = (len-1) / 2; i >= 0; i--) siftDown(ary, len, i); while(len > 1) { swap(ary[0], ary[--len]); siftDown(ary, len, 0); } return; }
void mergeSort(int ary[], int len) { if(len < 2) return; int mid = len / 2; int leftLen = mid; int rightLen = len - mid; mergeSort(ary, leftLen); mergeSort(ary+mid, rightLen); int i, j; int leftAry[leftLen], rightAry[rightLen]; for(i = 0; i < leftLen; i++) leftAry[i] = ary[i]; for(j = mid; j < len; j++) rightAry[j-mid] = ary[j]; i = j = 0; while(i < leftLen && j < rightLen) ary[i+j] = (leftAry[i] < rightAry[j])? leftAry[i++]: rightAry[j++]; while(i < leftLen) ary[i+j] = leftAry[i++]; while(j < rightLen) ary[i+j] = rightAry[j++]; return; }
void shellSort(int ary[], int len) { int gap = len; while(gap /= 2) for(int i = 0; i < gap; i++) _insertSort(ary, len, gap, i); return; }
bool isOrdered(int ary[], int len) { return (len < 2)? true : ((ary[0] <= ary[1]) && isOrdered(ary+1, len-1)); }
void bogoSort(int ary[], int len) { srand(time(NULL)); while(!isOrdered(ary, len)) for(int i = 0; i < len; i++) { int a = rand() % len; int b = rand() % len; swap(ary[a], ary[b]); } return; }
int main() { const int N = 1 << 10; const int MAX_RANGE = 10000; int ary[N]; srand(time(NULL)); printf("排序前:\n"); for(int i = 0; i < N; i++) { ary[i] = rand() % MAX_RANGE; printf("ary[%d]=%d\n", i, ary[i]); } printf("------------\n排序后:\n"); quickSort(ary, N); for(int i = 0; i < N; i++) printf("ary[%d]=%d\n",i,ary[i]); printf("%s",isOrdered(ary,N) ? "有序" : "无序"); }
|