434 Number of Segments in a String
题目描述:Count the number of segments in a string, where a segment is defined to be a contiguous sequence of non-space characters.Please note that the string does not contain any non-printable characters.
题目大意:给定一个string数组,找出空格分割字符的个数。
思路,当前非空,前一个字符为空即可
代码
package String; /** * @Author OovEver * @Date 2017/12/6 11:33 */ public class LeetCode434 { public static int countSegments(String s) { int res = 0; for(int i=0;i<s.length();i++) { // 前一个字符为空,当前字符不为空 if (s.charAt(i) != ' ' && (i == 0 || s.charAt(i - 1) == ' ')) { res++; } } return res; } public static void main(String[] args) { System.out.println(countSegments((" "))); } }