I suppose something is messed up in the part from 61 to 69, but can't figure what exactly, please help.
package com.codegym.task.task09.task0930;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
/*
Task about algorithms
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
ArrayList<String> list = new ArrayList<String>();
while (true) {
String s = reader.readLine();
if (s.isEmpty()) break;
list.add(s);
}
String[] array = list.toArray(new String[list.size()]);
sort(array);
for (String x : array) {
System.out.println(x);
}
}
public static void sort(String[] array) {
// write your code here
ArrayList<String> strings = new ArrayList<>();
ArrayList<Integer> numbers = new ArrayList<>();
for (int i = 0; i < array.length; i++) {
if (!isNumber(array[i])) {
strings.add(array[i]);
} else numbers.add(Integer.parseInt(array[i]));
}
Collections.sort(numbers);
Collections.reverse(numbers);
for (int i = 0; i < strings.size(); i++) {
String first = strings.get(i);
int firstIndex = i;
for (int j = i + 1; j < strings.size(); j++) {
if (!isGreaterThan(strings.get(j), first)) {
first = strings.get(j);
firstIndex = j;
}
}
if (i != firstIndex) {
String temp = strings.get(i);
strings.set(i, strings.get(firstIndex));
strings.set(firstIndex, temp);
}
}
int x = 0;
int y = 0;
for (int i = 0; i < array.length; i++) {
if (isNumber(array[i])) {
array[i] = String.valueOf(numbers.get(x));
x++;
} else array[i] = strings.get(y);
y++;
}
//checking
// System.out.println(strings);
// System.out.println(numbers);
}
// String comparison method: 'a' is greater than 'b'
public static boolean isGreaterThan(String a, String b) {
return a.compareTo(b) > 0;
}
// Is the passed string a number?
public static boolean isNumber(String s) {
if (s.length() == 0) return false;
char[] chars = s.toCharArray();
for (int i = 0; i < chars.length; i++) {
char c = chars[i];
if ((i != 0 && c == '-') // The string contains a hyphen
|| (!Character.isDigit(c) && c != '-') // or is not a number and doesn't start with a hyphen
|| (i == 0 && c == '-' && chars.length == 1)) // or is a single hyphen
{
return false;
}
}
return true;
}
}