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Merged
mhingan merged 1 commit into from
Jul 26, 2023
Merged

ex6 - streams #14

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8 changes: 8 additions & 0 deletions Java_Practice/src/main/java/org/example/Stream/Main.java
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Original file line number Diff line number Diff line change
Expand Up @@ -19,5 +19,13 @@ public static void main(String[] args) {

//exercise4
sHandler.exercise4();

//exercise5
sHandler.exercise5();

//exercise6
sHandler.exercise6();


}
}
28 changes: 26 additions & 2 deletions Java_Practice/src/main/java/org/example/Stream/SHandler.java
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Original file line number Diff line number Diff line change
@@ -1,8 +1,9 @@
package org.example.Stream;



import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import java.util.stream.Collectors;

Expand All @@ -27,7 +28,7 @@ public void exercise2() {
}

public void exercise3() {
List<String> names = Arrays.asList("Mara","Ion","Vasile","Ionela","Mirela","Ana","Marius","Mirel","Ana","Marcela");
List<String> names = Arrays.asList("Mara", "Ion", "Vasile", "Ionela", "Mirela", "Ana", "Marius", "Mirel", "Ana", "Marcela");
List<String> girls = names.stream()
.filter(name -> name.endsWith("a"))
.toList();
Expand All @@ -49,4 +50,27 @@ public void exercise4() {
.toList();
System.out.println(sortedList);
}

public void exercise5() {
//find the even numbers and square them
List<Integer> integers = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 0);
List<Integer> evenNumber = integers.stream()
.filter(nr -> nr % 2 == 0)
.map(nr -> nr * nr)
.toList();

System.out.println(evenNumber);
}

public void exercise6() {
//sort numbers descending and print the first 3
List<Integer> integers = Arrays.asList(21, 45, 33, 12, 56, 98, 77, 34, 9);
List<Integer> sortedList = integers.stream()
.sorted(Comparator.reverseOrder())
.limit(3)
.toList();

System.out.println(sortedList);
}

}