LeetCode 44 Wildcard Matching(字符串匹配问题)

package leetcode_50;


/***
 * 
 * @author pengfei_zheng
 * 字符串匹配问题
 */
public class Solution44 {
    public boolean isMatch(String s, String p) {
        int sp = 0, pp = 0, match = 0, starIdx = -1;            
        while (sp < s.length()){
            if (pp < p.length()  && (p.charAt(pp) == ‘?‘ 
                    || s.charAt(sp) == p.charAt(pp))){
                sp++;
                pp++;
            }
            else if (pp < p.length() && p.charAt(pp) == ‘*‘){
                starIdx = pp;
                match = sp;
                pp++;
            }
            else if (starIdx != -1){
                pp = starIdx + 1;
                match++;
                sp = match;
            }
            else return false;
        }
        while (pp < p.length() && p.charAt(pp) == ‘*‘)
            pp++;
        
        return pp == p.length();
    }
}