## Problem:

The "key" array is an array containing the correct answers to an exam, like {"a", "a", "b", "b"}. the "answers" array contains a student's answers, with "?" representing a question left blank. The two arrays are not empty and are the same length. Return the score for this array of answers, giving +4 for each correct answer, -1 for each incorrect answer, and +0 for each blank answer.

scoreUp({"a", "a", "b", "b"}, {"a", "c", "b", "c"}) → 6
scoreUp({"a", "a", "b", "b"}, {"a", "a", "b", "c"}) → 11
scoreUp({"a", "a", "b", "b"}, {"a", "a", "b", "b"}) → 16 ## Solution:

public int scoreUp(String[] key, String[] answers) {
int score = 0;
for (int i = 0; i < key.length; i++) {
score += 4;
score--;
}
return score;
}

1. public int scoreUp(String[] key, String[] answers) {

int score = 0;

for( int x = 0; x < key.length; x++){
else
}

return score;
}

2. public int scoreUp(String[] key, String[] answers) {

int res = 0;

for (int i = 0; i < key.length; i++) {
res += 4;
} else {
res--;
}
}
}

return res;
}

3. public int scoreUp(String[] key, String[] answers) {
int sum=0;
for (int i = 0; i < answers.length; i++) {
sum+=4;
}
else sum-=1;
}
}

return sum;
}

4. Solution Using ternary operator:

public int scoreUp(String[] key, String[] answers) {

int score = 0;

String tmp1 = key[i];

//Using ternary operator for the solution
score = tmp2=="?" ? (score+0) : tmp1.equals(tmp2) ? (score+4) : (!(tmp1.equals(tmp2))) ? (score-1) : score;

}
return score;
}

5. public int scoreUp(String[] key, String[] answers) {

int count=0;
for(int i=0;i<key.length;i++){

count=count+0;
}
count=count+4;
}
else {
count=count-1;
}

}
return count;
}