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

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

|1656|[Design an Ordered Stream](https://leetcode.com/problems/design-an-ordered-stream/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1656.java)||Easy|Array, Design|

|1652|[Defuse the Bomb](https://leetcode.com/problems/defuse-the-bomb/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1652.java)||Easy|Array|

|1640|[Check Array Formation Through Concatenation](https://leetcode.com/problems/check-array-formation-through-concatenation/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1640.java)||Easy|Array, Sort|

|1637|[Widest Vertical Area Between Two Points Containing No Points](https://leetcode.com/problems/widest-vertical-area-between-two-points-containing-no-points/)|[Javascript](./javascript/_1637.js)|| Medium| Sort|

packagecom.fishercoder.solutions;

importjava.util.ArrayList;

importjava.util.List;

importjava.util.TreeMap;

publicclass_1656 {

publicstaticclassSolution1 {

publicstaticclassOrderedStream {

TreeMap<Integer,String>map;

intptr;

intlimit;

publicOrderedStream(intn) {

this.map =newTreeMap<>();

this.ptr =1;

this.limit =n;

}

publicList<String>insert(intid,Stringvalue) {

map.put(id,value);

List<String>result =newArrayList<>();

if (map.containsKey(ptr)) {

for (intkey =ptr;key <=limit;key++) {

if (map.containsKey(key)) {

result.add(map.get(key));

}else {

break;

}

}

inti =id;

while (map.containsKey(i)) {

i++;

}

ptr =i;

}

returnresult;

}

}

}

}

packagecom.fishercoder;

importcom.fishercoder.solutions._1656;

importorg.junit.BeforeClass;

importorg.junit.Test;

importjava.util.Arrays;

importjava.util.Collections;

importstaticorg.junit.Assert.assertArrayEquals;

importstaticorg.junit.Assert.assertEquals;

publicclass_1656Test {

privatestatic_1656.Solution1.OrderedStreamorderedStream;

publicvoidtest1() {

orderedStream =new_1656.Solution1.OrderedStream(5);

assertEquals(Collections.emptyList(),orderedStream.insert(3,"ccccc"));

assertEquals(Arrays.asList("aaaaa"),orderedStream.insert(1,"aaaaa"));

assertEquals(Arrays.asList("bbbbb","ccccc"),orderedStream.insert(2,"bbbbb"));

assertEquals(Collections.emptyList(),orderedStream.insert(5,"eeeee"));

assertEquals(Arrays.asList("ddddd","eeeee"),orderedStream.insert(4,"ddddd"));

}

}