﻿ Java exercises: Divide a string in n equal parts - w3resource # Java String Exercises: Divide a string in n equal parts

## Java String: Exercise-40 with Solution

Write a Java program to divide a string in n equal parts.

Pictorial Presentation: Sample Solution:

Java Code:

``````import java.util.*;
class Main {
static void splitString(String str1, int n) {
int str_size = str1.length();
int part_size;
if (str_size % n != 0) {
System.out.println("The size of the given string is not divisible by " + n);
return;
} else {
System.out.println("The given string is: " + str1);
System.out.println("The string divided into " + n + " parts and they are: ");
part_size = str_size / n;
for (int i = 0; i < str_size; i++) {
if (i % part_size == 0) System.out.println();
System.out.print(str1.charAt(i));
}
}
}
public static void main(String[] args) {
String str1 = "abcdefghijklmnopqrstuvwxy";
int split_number = 5;
splitString(str1, split_number);
}
}
```
```

Sample Output:

```The given string is: abcdefghijklmnopqrstuvwxy
The string divided into 5 parts and they are:

abcde
fghij
klmno
pqrst
uvwxy
```

Flowchart: Visualize Java code execution (Python Tutor):

Java Code Editor:

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## Java: Tips of the Day

Array vs ArrayLists:

The main difference between these two is that an Array is of fixed size so once you have created an Array you cannot change it but the ArrayList is not of fixed size. You can create instances of ArrayLists without specifying its size. So if you create such instances of an ArrayList without specifying its size Java will create an instance of an ArrayList of default size.

Once an ArrayList is full it re-sizes itself. In fact, an ArrayList is internally supported by an array. So when an ArrayList is resized it will slow down its performance a bit as the contents of the old Array must be copied to a new Array.

At the same time, it's compulsory to specify the size of an Array directly or indirectly while creating it. And also Arrays can store both primitives and objects while ArrayLists only can store objects.

Ref: https://bit.ly/3o8L2KH