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

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

|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|

|1685|[Sum of Absolute Differences in a Sorted Array](https://leetcode.com/problems/sum-of-absolute-differences-in-a-sorted-array/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1685.java)||Medium|Math, Greedy|

|1684|[Count the Number of Consistent Strings](https://leetcode.com/problems/count-the-number-of-consistent-strings/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1684.java)||Easy|String|

|1679|[Max Number of K-Sum Pairs](https://leetcode.com/problems/max-number-of-k-sum-pairs/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1679.java)||Medium|HashTable|

packagecom.fishercoder.solutions;

publicclass_1688 {

publicstaticclassSolution1 {

publicintnumberOfMatches(intn) {

intmatches =0;

while (n >1) {

if (n %2 ==0) {

matches +=n /2;

n /=2;

}else {

matches += (n -1) /2;

n = (n +1) /2;

}

}

returnmatches;

}

}

}

packagecom.fishercoder;

importcom.fishercoder.solutions._1688;

importorg.junit.BeforeClass;

importorg.junit.Test;

importstaticorg.junit.Assert.assertEquals;

publicclass_1688Test {

privatestatic_1688.Solution1solution1;

publicstaticvoidsetup() {

solution1 =new_1688.Solution1();

}

publicvoidtest1() {

assertEquals(6,solution1.numberOfMatches(7));

}

}