public int rand10() {

int temp = 0;

while (true) {

temp = (rand7() - 1) * 7 + (rand7() - 1);

if (temp < 40) {

break;

}

return temp % 10 + 1;

}

class Solution {

public int maxRepOpt1(String text) {

int[] count = new int[26];

for (char c : text.toCharArray()) {

count[c - 'a']++;

}

int maxCount = 0;

int i = 0;

while (i < text.length()) {

char c = text.charAt(i);

int curr = i;

int currCount = 0;

int diff = 0;

// To skip the same characters before we make a swap

int swapPoint = i;

while (curr < text.length() && (text.charAt(curr) == c || diff == 0) && currCount < count[c - 'a']) {

if (text.charAt(curr) != c) {

diff++;

swapPoint = curr - 1;

}

currCount++;

curr++;

}

maxCount = Math.max(maxCount, currCount);

i = swapPoint + 1;

}

return maxCount;

}

}