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Update string.c

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K&R  fast implementation of reverse
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Hamza Saidu 2022-10-09 11:05:15 +01:00 committed by GitHub
parent 7aff64740e
commit 5b5420f95a
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1 changed files with 10 additions and 7 deletions
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13
21-shell/libc/string.c
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@ -17,13 +17,16 @@ void int_to_ascii(int n, char str[]) {
reverse(str); reverse(str);
} }
/* K&R */ /* K&R */
void reverse(char s[]){ void reverse(char s[]){
int c, i, j; char tmp;
for (i = 0, j = strlen(s)-1; i < j; i++, j--) { int l, j;
c = s[i]; l = strlen(s);
s[i] = s[j]; for (j = 0; j < l/2; j++){
s[j] = c; tmp = s[l - j - 1];
s[l - j - 1] = s[j];
s[j] = tmp;
} }
} }