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Add 0028-find-the-index-of-the-first-occurrence-in-a-string.c #2262

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Merged
merged 1 commit into from
Feb 17, 2023
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Add 0028-find-the-index-of-the-first-occurrence-in-a-string.c #2262

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Add 0028-find-the-index-of-the-first-occurrence-in-a-string.c
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@seinlin
seinlin committed Feb 16, 2023
commit d8df54c0b4e3aa6dcba0ebbf543283109d69d120
19 changes: 19 additions & 0 deletions c/0028-find-the-index-of-the-first-occurrence-in-a-string.c
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Original file line number Diff line number Diff line change
@@ -0,0 +1,19 @@
int strStr(char * haystack, char * needle){
int h_size = strlen(haystack);
int n_size = strlen(needle);
int i, j;
if (h_size < n_size) {
return -1;
}
for (i = 0; i < h_size - n_size + 1; i++) {
for (j = 0; j < n_size; j++) {
if (haystack[i + j] != needle[j]) {
break;
}
}
if (j == n_size) {
return i;
}
}
return -1;
}