public class Main {
public static void main(String[] args) {
int number = 2737;
int maxChanges = 1;
int result = findLargestNumberWithChanges(number, maxChanges);
System.out.println("Largest number with " + maxChanges + " changes: " + result);
}
public static int findLargestNumberWithChanges(int number, int maxChanges) {
char[] numArray = Integer.toString(number).toCharArray();
int length = numArray.length;
char[] resultArray = new char[length];
for (int i = 0; i < length; i++) {
if (maxChanges == 0) {
break;
}
char maxDigit = numArray[i];
int maxIndex = i;
for (int j = i + 1; j < length; j++) {
if (numArray[j] > maxDigit) {
maxDigit = numArray[j];
maxIndex = j;
}
}
if (maxDigit > numArray[i]) {
maxChanges--;
}
resultArray[i] = maxDigit;
numArray[maxIndex] = numArray[i];
}
for (int i = 0; i < length; i++) {
if (resultArray[i] == 0) {
resultArray[i] = numArray[i];
}
}
return Integer.parseInt(new String(resultArray));
}
}