Question: A palindrome is a word or a phrase that is the same when read both forward and backward. Examples are: "bob," "sees," or "never odd or even" (ignoring spaces). Write a program whose input is a word or phrase, and that outputs whether the input is a palindrome. Ex: If the input is: bob the output is: palindrome: bob Ex: If the input is: bobby the output is: not a palindrome: bobby Hint: Start by just handling single-word input, and submit for grading. Once passing single-word test cases, extend the program to handle phrases. If the input is a phrase, remove or ignore spaces. My Issue: I'm unable to use replaceAll(" ", "") as the java program wouldn't allow me as we're working on loops this week and haven't touch upon it. I've attached a screenshot where replaceAll method resulted in no output with the error displayed "Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 16". Regardless,I don't know how to include the space in the string variable to include the entire sentence as a palindrone. My code: import java.util.Scanner; public class LabProgram { public static void main(String[] args) { /* Type your code here. */String word=""; String opposite = ""; Scanner scnr= new Scanner(System.in); word = scnr.nextLine(); for(int i = word.length() - 1; i >= 0; i--){ opposite = opposite + word.charAt(i); } if(word.equals(opposite)){ System.out.println(“palindrome: " +word); } else{ System.out.println(“not a palindrome: "+word); } } } My initial code with replaceAll: String word = ""; String oppos = ""; Scanner scnr = new Scanner(System.in); word = scnr.nextLine(); String str = word.replaceAll(" ",""); for(int i = word.length() - 1; i >= 0; i--){ oppos = oppos + str.charAt(i); } if(str.equals(oppos)){ System.out.println(“palindrome: " +word); } else{ System.out.println(“not a palindrome: "+word); } } }
Operations
In mathematics and computer science, an operation is an event that is carried out to satisfy a given task. Basic operations of a computer system are input, processing, output, storage, and control.
Basic Operators
An operator is a symbol that indicates an operation to be performed. We are familiar with operators in mathematics; operators used in computer programming are—in many ways—similar to mathematical operators.
Division Operator
We all learnt about division—and the division operator—in school. You probably know of both these symbols as representing division:
Modulus Operator
Modulus can be represented either as (mod or modulo) in computing operation. Modulus comes under arithmetic operations. Any number or variable which produces absolute value is modulus functionality. Magnitude of any function is totally changed by modulo operator as it changes even negative value to positive.
Operators
In the realm of programming, operators refer to the symbols that perform some function. They are tasked with instructing the compiler on the type of action that needs to be performed on the values passed as operands. Operators can be used in mathematical formulas and equations. In programming languages like Python, C, and Java, a variety of operators are defined.
Question:
A palindrome is a word or a phrase that is the same when read both forward and backward. Examples are: "bob," "sees," or "never odd or even" (ignoring spaces). Write a
Ex: If the input is:
bob
the output is:
palindrome: bob
Ex: If the input is:
bobby
the output is:
not a palindrome: bobby
Hint: Start by just handling single-word input, and submit for grading. Once passing single-word test cases, extend the program to handle phrases. If the input is a phrase, remove or ignore spaces.
My Issue:
I'm unable to use replaceAll(" ", "") as the java program wouldn't allow me as we're working on loops this week and haven't touch upon it. I've attached a screenshot where replaceAll method resulted in no output with the error displayed "Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 16". Regardless,I don't know how to include the space in the string variable to include the entire sentence as a palindrone.
My code:
import java.util.Scanner;
public class LabProgram {
public static void main(String[] args) {
/* Type your code here. */String word="";
String opposite = "";
Scanner scnr= new Scanner(System.in);
word = scnr.nextLine();
for(int i = word.length() - 1; i >= 0; i--){
opposite = opposite + word.charAt(i);
}
if(word.equals(opposite)){
System.out.println(“palindrome: " +word);
}
else{
System.out.println(“not a palindrome: "+word);
}
}
}
My initial code with replaceAll:
String word = "";
String oppos = "";
Scanner scnr = new Scanner(System.in);
word = scnr.nextLine();
String str = word.replaceAll(" ","");
for(int i = word.length() - 1; i >= 0; i--){
oppos = oppos + str.charAt(i);
}
if(str.equals(oppos)){
System.out.println(“palindrome: " +word);
}
else{
System.out.println(“not a palindrome: "+word);
}
}
}
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