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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)); } }