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leetcode_434

admin 11月 12, 2020 0

Number of Segments in a String

Problem

数一个字符串中的单词数，用空格间隔

Solution

public class  {
    public int countSegments(String s) {
        int count = 0;
        
        
        int head = 0;
        while(head<s.length() && s.charAt(head) == ' ') {
            head++;
        }
    
        while( head<s.length() ) {
            if(s.charAt(head) != ' '){
                count++;
            }
            // 走完这一串字
            while(head<s.length() && s.charAt(head) != ' '){
                head++;
            }
            // 走完空格
            while(head<s.length() && s.charAt(head) == ' '){
                head++;
            }
        }
        
        return count;
    }
}