Java > String-1 > right2 (CodingBat Solution)

Problem:

Given a string, return a "rotated right 2" version where the last 2 chars are moved to the start. The string length will be at least 2.

right2("Hello") → "loHel"
right2("java") → "vaja"
right2("Hi") → "Hi"


Solution:

public String right2(String str) {
  return str.substring(str.length()-2, str.length()) + str.substring(0,  
    str.length()-2);
}


2 comments :

  1. public String right2(String str) {
    if(str.length() <= 2){
    return str;
    }
    final String lastTwoChar = str.substring(Math.max(0, str.length() - 2));
    if(str.length() < 4){
    return str.substring(1) + str.charAt(0);
    }
    return lastTwoChar + str.substring(0, str.length()- 2);
    }

    ReplyDelete

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