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| class Solution {
public void reverseWords(char[] s) {
reverse(s, 0, s.length - 1);
int j = 0;
while (j < s.length) {
int i = j;
while (j < s.length && s[j] != ' ') {
j++;
}
reverse(s, i, j - 1);
j++;
}
}
private void reverse(char[] chars, int i, int j) {
while (i < j) {
swap(chars, i++, j--);
}
}
private void swap(char[] chars, int i, int j) {
char tmp = chars[i];
chars[i] = chars[j];
chars[j] = tmp;
}
}
|
References
186. Reverse Words in a String II