题目

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.

Example:

  1. Input: "Hello, my name is John"
  2. Output: 5

题意

计算给定字符串中非空子串的个数

思路

直接遍历处理即可。

代码实现

Java

  1. class Solution {
  2.     public int countSegments(String s) {
  3.         int count = 0;
  4.         int len = 0;
  5.         for (char c : s.toCharArray()) {
  6.             if (c != ' ') {
  7.                 len++;
  8.             } else {
  9.                 count += len > 0 ? 1 : 0;
  10.                 len = 0;
  11.             }
  12.         }
  13.         count += len > 0 ? 1 : 0;
  14.         return count;
  15.     }
  16. }