Notesale: Turn your study into money

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Question 1: Demonstrate how you can sort an array in ascending and descending order
An array can be sorted by importing the Arrays library and using the sort method
...

Ascending Order
package sorting;
import java
...
Arrays; //import Arrays library
import java
...
Scanner;
public class Sorting {
public static void main(String[] args) {
int marks[]=new int[4];
Scanner s=new Scanner(System
...
out
...
nextInt();}
Arrays
...
length;i++){
System
...
println("Mark:" + marks[i]); // show marks in ascending order
}
}}
Output: Mark: 24
Mark: 45
Mark: 87
Mark: 100
Descending Order
Arrays can be sorted in descending order using two methods:
1
...
Converting array to integer objects and then importing form the Collections library
package descending;
import java
...
Arrays;
import java
...
Collections;

import java
...
Scanner;
public class Descending {
public static void main(String[] args) {
int marks[]=new int[4];
Scanner s=new Scanner(System
...
out
...
nextInt();}

//10,25,78,80

Integer[] desc=new Integer[marks
...
sort(desc,Collections
...
out
...
array;
public class StudentArray {
public static void main(String[] args) {
int marks[][]={{75,100,84,76,100},{80,00,45,65,10},{10,45,34,78,97}};

for(int i=0;i<3;i++){for (int j=0;j<5;j++){System
...
println(marks[i][j]+"");}

}
System
...
println("");
}
}
Output: 75
100
84
76
100
80
0
45
65
10
10
45
34
78
97

2b) 4*5 array
package stringarray;
import java
...
Arrays;
public class Stringarray {
public static void main(String[] args) {

String
name[][]={{"Sekai","Sam","kim","kate","kitsi"},{"Kudzai","munhu","sekie","skye","vanhu"},{"
Donald","taku","gamu","ana","jose"},{"Sabelo","tarie","olie","tino","tadie"}};
for(int i=0;i<4;i++){for (int j=0;j<5;j++){System
...
println(name[i][j]+"");}}
System
...
println("");
} }
Question 3: For the array created in (2b), show how it can be sorted in ascending or
descending order per row
...
util
...
util
...
util
...
util
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add(s);}
Collections
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System
...
println(list);
} }}
Output: [kate, kim, kitsi, sam, sekai]
[kate, kim, kitsi, kudzai, munhu, sam, sekai, sekie, skye, vanhu]
[ana, donald, gamu, jose, kate, kim, kitsi, kudzai, munhu, sam, sekai, sekie, skye, taku, vanhu]
[ana, donald, gamu, jose, kate, kim, kitsi, kudzai, munhu, olie, sabelo, sam, sekai, sekie, skye,
tadie, taku, tarie, tino, vanhu]



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