| # | Title | Solutions | Video | Difficulty | Tag

|-----|----------------|---------------|--------|-------------|-------------

|1700|[Number of Students Unable to Eat Lunch](https://leetcode.com/problems/number-of-students-unable-to-eat-lunch/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1700.java)||Easy|Array|

|1694|[Reformat Phone Number](https://leetcode.com/problems/reformat-phone-number/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1694.java)||Easy|String|

|1690|[Stone Game VII](https://leetcode.com/problems/stone-game-vii/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1690.java)||Medium|DP|

|1688|[Count of Matches in Tournament](https://leetcode.com/problems/count-of-matches-in-tournament/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1688.java)||Easy|Backtracking|

packagecom.fishercoder.solutions;

importjava.util.LinkedList;

importjava.util.Queue;

publicclass_1700 {

publicstaticclassSolution1 {

publicintcountStudents(int[]students,int[]sandwiches) {

Queue<Integer>studentsQueue =newLinkedList<>();

Queue<Integer>sandwichesQueue =newLinkedList<>();

for (inti =0;i <sandwiches.length;i++) {

studentsQueue.add(students[i]);

sandwichesQueue.add(sandwiches[i]);

}

do {

if (!studentsQueue.isEmpty()) {

if (studentsQueue.peek() ==sandwichesQueue.peek()) {

studentsQueue.poll();

sandwichesQueue.poll();

}else {

if (!studentsQueue.contains(sandwichesQueue.peek())) {

break;

}

studentsQueue.add(studentsQueue.poll());

}

}

}while (!studentsQueue.isEmpty());

returnstudentsQueue.size();

}

}

}

packagecom.fishercoder;

importcom.fishercoder.solutions._1700;

importorg.junit.BeforeClass;

importorg.junit.Test;

importstaticorg.junit.Assert.assertEquals;

publicclass_1700Test {

privatestatic_1700.Solution1solution1;

publicstaticvoidsetup() {

solution1 =new_1700.Solution1();

}

publicvoidtest1() {

assertEquals(0,solution1.countStudents(newint[]{1,1,0,0},newint[]{0,1,0,1}));

}

publicvoidtest2() {

assertEquals(3,solution1.countStudents(newint[]{1,1,1,0,0,1},newint[]{1,0,0,0,1,1}));

}

}