Why some cases can't pass? Could anyone help me out?

• ``````class Solution {
public int[] searchRange(int[] nums, int target) {
if (nums.length == 0) {
return new int[]{-1,-1};
}

int start, end, mid;
int []bound = new int[2];

//search for the left bound
start = 0;
end = nums.length - 1;
while (start + 1 < end) {
mid = start + (end - start) / 2;
if (mid == target) {
end = mid;
}
if (mid < target) {
start = mid;
}
if (mid > target) {
end = mid;
}
}

if(nums[start] == target) {
bound[0] = start;
}
else if(nums[end] == target) {
bound[0] = end;
}
else {
bound[0] = bound[1] = -1;
}

//search for the right bound
start = 0;
end = nums.length - 1;
while (start + 1 < end) {
mid = start + (end - start) / 2;
if (mid == target) {
end = mid;
}
if (mid < target) {
start = mid;
}
if (mid > target) {
end = mid;
}
}

if(nums[end] == target) {
bound[1] = end;
}
else if(nums[start] == target) {
bound[1] = start;
}
else {
bound[0] = bound[1] = -1;
}

return bound;
}
}

public class MainClass {
public static int[] stringToIntegerArray(String input) {
input = input.trim();
input = input.substring(1, input.length() - 1);
if (input.length() == 0) {
return new int[0];
}

String[] parts = input.split(",");
int[] output = new int[parts.length];
for(int index = 0; index < parts.length; index++) {
String part = parts[index].trim();
output[index] = Integer.parseInt(part);
}
return output;
}

public static String integerArrayToString(int[] nums, int length) {
if (length == 0) {
return "[]";
}

String result = "";
for(int index = 0; index < length; index++) {
int number = nums[index];
result += Integer.toString(number) + ", ";
}
return "[" + result.substring(0, result.length() - 2) + "]";
}

public static String integerArrayToString(int[] nums) {
return integerArrayToString(nums, nums.length);
}

public static void main(String[] args) throws IOException {
String line;
while ((line = in.readLine()) != null) {
int[] nums = stringToIntegerArray(line);
int target = Integer.parseInt(line);

int[] ret = new Solution().searchRange(nums, target);

String out = integerArrayToString(ret);

System.out.print(out);
}
}
}
``````

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