java Program to divide a string in 'N' equal parts.

Java Program to divide a string in 'N' equal parts.

Here, our task is to divide the string S into n equal parts. We will print an error message if the string cannot be divisible into n equal parts otherwise all the parts need to be printed as the output of the program.

To check whether the string can be divided into N equal parts, we need to divide the length of the string by n and assign the result to variable chars.

If the char comes out to be a floating point value, we can't divide the string otherwise run for loop to traverse the string and divide the string at every chars interval.

The algorithm of the program is given below.

Algorithm

STEP 1: START
STEP 2: DEFINE str = "aaaabbbbcccc"
STEP 3: DEFINE len
STEP 4: SET n =3
STEP 5: SET temp = 0.
STEP 6: chars = len/n
STEP 7: DEFINE String[] equalstr.
STEP 8: IF (len%n!=0)
then PRINT ("String can't be divided into equal parts")
else go to STEP 9
STEP 9: SET i =0.
STEP 10: REPEAT STEP 11 to STEP 14 UNTIL i<len
STEP 11: DEFINE substring part.
STEP 12: equalstr [temp] = part
STEP 13: temp = temp + 1
STEP 14: i = i + chars
STEP 15: PRINT n
STEP 16: SET i=0. REPEAT STEP 17 to STEP 18 UNTIL i<equalstr.length
STEP 17: PRINT equalstr[i]
STEP 18: i = i + 1
STEP 19: END

Program:

public class DivideString {
    public static void main(String[] args) {
          String str = "aaaabbbbcccc";

        //Stores the length of the string
        int len = str.length();
        //n determines the variable that divide the string in 'n' equal parts
        int n = 3;
        int temp = 0, chars = len/n;
        //Stores the array of string
        String[] equalStr = new String [n];
        //Check whether a string can be divided into n equal parts
        if(len % n != 0) {
            System.out.println("Sorry this string cannot be divided into "+ n +" equal parts.");
        }
        else {
            for(int i = 0; i < len; i = i+chars) {
                //Dividing string in n equal part using substring()
                String part = str.substring(i, i+chars);
                equalStr[temp] = part;
                temp++;
            }
    System.out.println(n + " equal parts of given string are ");
            for(int i = 0; i < equalStr.length; i++) {
                System.out.println(equalStr[i]);
                }
            }
        }
}

Output:

3 equal parts of given string are
aaaa
bbbb
cccc

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