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javarandomsequence
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Reputation: 5602

Generating sequence numbers in Java

I would like to generate sequence number from 01 to 10. But I only want the odd ones. For example,

01 03 05 07 09

I tried this way.

for (int i = 1; i < 10; i++) {
    String sequence = String.format("%02d", i);
    System.out.println(sequence); //this prints out from 01,02,03.... to 09.

So how should I change my code to omit the even ones in between?

Upvotes: 2

Views: 10340

Answers (4)

Brendan
Brendan

Reputation: 175

You can just make the loop increment by 2 instead of by just 1!

Example with your code:

for (int i = 1; i < 10; i+=2) 
{
    String sequence = String.format("%02d", i);
    System.out.println(sequence);
}

Upvotes: 1

Rijul Gupta
Rijul Gupta

Reputation: 1171

just use a loop

For loop

for(int i=1;i<=10;i+=2)
System.out.println(i);

While loop

int i=1;
while(i<=10){
System.out.println(i);
i+=2;
}

Do-While loop

int i=1;
do{
System.out.println(i);
i+=2}while(i<=10);

Upvotes: 0

Chandrew
Chandrew

Reputation: 17277

Since you want it formatted, only with odd numbers, this outputs:

01 03 05 07 09

for (int i = 1; i < 10; i+=2)
  System.out.println( String.format("%02d", i) );

Upvotes: 3

Anubian Noob
Anubian Noob

Reputation: 13596

Use a for loop changing the increment stage:

for (int i = 1; i < 10; i += 2)
    System.out.println(i);

Upvotes: 1

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