# Could someone give some suggestion about my code?

• public class Solution {
public static boolean isInterleave(String s1, String s2, String s3) {

``````    int l1=s1.length(), l2=s2.length(),l3=s3.length(),i=0, j=0,m=0,n=0;

if(l1==0||l2==0){
return l1==0?s3==s2:s3==s1;
}
if(l3!=(l1+l2))return false;
if(l3==0)return true;
if((s3.charAt(0)!=s1.charAt(0))&&(s3.charAt(0)!=s2.charAt(0)))return false;

for(int t=0;t<l1;t++){
if(s3.charAt(t)==s1.charAt(i)){
i++;
m++;
}
else{
break;
}
}

for(int t=0;t<l2;t++){
if(s3.charAt(t)==s2.charAt(j)){
j++;
n++;
}
else{
break;
}

}

return m>=n?Helper(s2,s1.substring(m),s3.substring(m)):Helper(s1,s2.substring(n),s3.substring(n));
}

public static boolean Helper(String s1,String s2,String s3){
int l=s1.length(),l3=s3.length(),i=0,t=0;
System.out.println(s1+" "+s2+" "+s3);
if(l==0){
return s3==s2;
}
if((s3.charAt(0)!=s1.charAt(0)))return false;
while(i<l&&(s1.charAt(i)==s3.charAt(t))){
i++;
t++;
}
s3=s3.substring(t);
s1=s1.substring(t);
return Helper(s2,s1,s3);
}
``````

}

• It gave the wrong answer in leetcode, but right answer in eclipse with the same example
"a","","a"

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