本文共 5134 字，大约阅读时间需要 17 分钟。
| 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 | #include <stdio.h> #include <stdlib.h> #include <string.h> typedef struct { unsigned int size; //子字符串数量 char **list; //用字符串数组来存放字符串列表 }st_strlist; /* * 初始化一个字符串列表 * 注意：strlist_malloc() 和 strlist_free(st_strlist*) 要配对使用 */ st_strlist* strlist_malloc() { st_strlist *strlist = (st_strlist*) malloc ( sizeof (st_strlist)); memset (strlist, 0, sizeof (st_strlist)); return strlist; } /* * 在strlist列表的末端增加一个字符串 */ int strlist_add(st_strlist *strlist, char *str) { int len = strlen (str); strlist->size++; strlist->list = ( char **) realloc (strlist->list, sizeof ( char *) * strlist->size); if (strlist->list == NULL){ /* out of memory! */ printf ( "error: not enough memory (realloc returned NULL)\n" ); return -1; } strlist->list[strlist->size-1]=( char *) malloc (len+1); memcpy (strlist->list[strlist->size-1], str, len); (strlist->list[strlist->size-1])[len]=0; return strlist->size; } /* * 在字符串列表的index序号后插入str字符串 */ int strlist_insertAfter(st_strlist *strlist, char * str, unsigned int index) { int i, len; if (index >= strlist->size){ return -1; } len = strlen (str); strlist->size++; strlist->list = ( char **) realloc (strlist->list, sizeof ( char *) * strlist->size); if (strlist->list == NULL){ /* out of memory! */ printf ( "error: not enough memory (realloc returned NULL)\n" ); return -1; } for (i= strlist->size-1; i>index+1; i--){ strlist->list[i] = strlist->list[i-1]; } strlist->list[index+1] = ( char *) malloc (len+1); memcpy (strlist->list[index+1], str, len); strlist->list[index+1][len]=0; return 0; } /* * 删除字符串列表strlist末端的字符串 */ int strlist_removeLast(st_strlist *strlist){ if (strlist->size <=0){ return -1; } free (strlist->list[strlist->size-1]); strlist->size--; return strlist->size; } /* * 删除字符串列表index位置处的字符串 */ int strlist_removeAt(st_strlist *strlist, unsigned int index) { int i; if (index >= strlist->size){ return -1; } free (strlist->list[index]); for (i=index; i< strlist->size-1; i++){ strlist->list[i] = strlist->list[i+1]; } strlist->size--; return strlist->size; } /* * 获取strlist中index处的字符串。 */ char * strlist_getStrAt(st_strlist *strlist, unsigned int index) { if (strlist==NULL || index>=strlist->size){ return NULL; } return strlist->list[index]; } /* * 判断字符串列表strlist内是否包含了字符串str。 */ int strlist_contains(st_strlist *strlist, char * str) { int i; for (i=0; i<strlist->size; i++){ if (0 == ( strcmp (strlist->list[i], str))){ return 1; } } return 0; } /* * 释放字符串列表占用的内存空间 */ int strlist_free(st_strlist *strlist) { int i; if (!strlist){ return -1; } for (i=0; i<strlist->size; i++){ free (strlist->list[i]); } free (strlist->list); free (strlist); return 0; } /* * 打印字符串列表的相关信息 */ void strlist_infolog(st_strlist *strlist) { int i; printf ( "\n>>>\n" ); printf ( "strlist info:\n" ); printf ( "strlist size: %d\n" , strlist->size); for (i=0; i<strlist->size; i++){ printf ( "%d, %s\n" ,i, strlist->list[i]); } } int main( int argc, char *argv[]) { printf ( "hello c_strlist!" ); st_strlist *strlist = strlist_malloc(); strlist_infolog(strlist); strlist_add(strlist,( char *) "aaaa" ); strlist_infolog(strlist); strlist_add(strlist,( char *) "bbbb" ); strlist_infolog(strlist); strlist_add(strlist,( char *) "字符串列表测试" ); strlist_infolog(strlist); strlist_insertAfter(strlist, ( char *) "ccccc" , 1); strlist_infolog(strlist); printf ( "\nis strlist contians \"123\"? %d\n" , strlist_contains(strlist,( char *) "123" )); printf ( "\nis strlist contians \"字符串列表测试\" ? %d\n" , strlist_contains(strlist,( char *) "字符串列表测试" )); strlist_removeLast(strlist); strlist_infolog(strlist); printf ( "\nis strlist contians \"字符串列表测试\" ? %d\n" , strlist_contains(strlist,( char *) "字符串列表测试" )); strlist_removeAt(strlist,1); strlist_infolog(strlist); strlist_free(strlist); return 0; } /************************ *** 输出结果： hello c_strlist! >>> strlist info: strlist size: 0 >>> strlist info: strlist size: 1 0, aaaa >>> strlist info: strlist size: 2 0, aaaa 1, bbbb >>> strlist info: strlist size: 3 0, aaaa 1, bbbb 2, 字符串列表测试 >>> strlist info: strlist size: 4 0, aaaa 1, bbbb 2, ccccc 3, 字符串列表测试 is strlist contians "123"? 0 is strlist contians "字符串列表测试" ? 1 >>> strlist info: strlist size: 3 0, aaaa 1, bbbb 2, ccccc is strlist contians "字符串列表测试" ? 0 >>> strlist info: strlist size: 2 0, aaaa 1, ccccc ************************/ |
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