使用for循环遍历拆分索引

Question

I have a program in which a user inputs 5 words integers separated with spaces. The program then outputs the characters corresponding to the numbers. eg: sPaghetti omElette Apple Crouton Exciting and 2 3 1 1 1 would result in the output of PEACE .

Here's my code:

import java.util.Scanner;
Scanner userInput = new Scanner(System.in);


System.out.print("Enter five words: ");
String fiveWords = userInput.nextLine();

// Split string by word
String[] wordIndex = fiveWords.split(" ");


System.out.print("Enter five integers: ");
String fiveInts = userInput.nextLine();

// Split string by integer
String[] intIndex = fiveInts.split(" ");


for (int i = 0; i < 5; i++) {
     // Next line doesn't work, though I believe it should
     System.out.println((int) intIndex[i]);
     // Because of previous line, this one shouldn't work
     System.out.println(wordIndex[i].charAt(number));
}

When trying to iterate through the index using charAt() I keep getting a

required: int
found: String

error and casting to an int doesn't seem to work. How might I fix this?

Answer 1

System.out.println((int) intIndex[i]);

this line of code is throwing error because you are trying to parse String as int primitive which is not allowed.

use Integer.parseInt(intIndex[i]) to get a Integer object which can be assigned to int priitive through auto unboxing.

Answer 2

You need to change at two places:

First is you need to parse the String to int with Integer.parseInt("yourString") because you can access array with int address

Second is to get correct output you need to do -1 at index because array starts at index 0 like below:

for (int i = 0; i < 5; i++) {
    int number = Integer.parseInt(intIndex[i]);
    System.out.print(wordIndex[i].charAt(number-1));
}