Leetcode 434. Number of Segments in a String

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public class Solution {    public int countSegments(String s) {        int ret = 0;        // count number of segment instead of space        char[] arr = s.toCharArray();        for (int i=0; i<arr.length; i++)            if (arr[i] != ' ' && (i == 0 || arr[i-1] == ' '))                ret++;        return ret;    }}

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