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Java-based LeetCode algorithm problem solutions, regularly updated
package g0001_0100.s0044_wildcard_matching;
// #Hard #Top_Interview_Questions #String #Dynamic_Programming #Greedy #Recursion
// #Udemy_Dynamic_Programming #2023_08_11_Time_2_ms_(99.87%)_Space_43.2_MB_(99.49%)
public class Solution {
public boolean isMatch(String inputString, String pattern) {
int i = 0;
int j = 0;
int starIdx = -1;
int lastMatch = -1;
while (i < inputString.length()) {
if (j < pattern.length()
&& (inputString.charAt(i) == pattern.charAt(j) || pattern.charAt(j) == '?')) {
i++;
j++;
} else if (j < pattern.length() && pattern.charAt(j) == '*') {
starIdx = j;
lastMatch = i;
j++;
} else if (starIdx != -1) {
// there is a no match and there was a previous star, we will reset the j to indx
// after star_index
// lastMatch will tell from which index we start comparing the string if we
// encounter * in pattern
j = starIdx + 1;
// we are saying we included more characters in * so we incremented the
lastMatch++;
// index
i = lastMatch;
} else {
return false;
}
}
boolean isMatch = true;
while (j < pattern.length() && pattern.charAt(j) == '*') {
j++;
}
if (i != inputString.length() || j != pattern.length()) {
isMatch = false;
}
return isMatch;
}
}