Sure, here is a step-by-step solution in Python:

1. Initialize two pointers, start and end, to 0. These pointers represent the current substring we are looking at.
2. Initialize a dictionary to keep track of the characters in the current substring and their indices.
3. While the end pointer is less than the length of the string:
- If the character at the end pointer is not in the dictionary, add it to the dictionary and increment the end pointer.
- If the character at the end pointer is in the dictionary, remove the character at the start pointer from the dictionary and increment the start pointer.
4. At each step, calculate the length of the current substring (end - start) and keep track of the maximum length.
5. Return the maximum length.

Here is the Python code for the above steps:

```python
def lengthOfLongestSubstring(s):
start = end = max_length = 0
char_dict = {}

while end

Question

Sure, here is a step-by-step solution in Python:

1. Initialize two pointers, start and end, to 0. These pointers represent the current substring we are looking at.
2. Initialize a dictionary to keep track of the characters in the current substring and their indices.
3. While the end pointer is less than the length of the string:
    - If the character at the end pointer is not in the dictionary, add it to the dictionary and increment the end pointer.
    - If the character at the end pointer is in the dictionary, remove the character at the start pointer from the dictionary and increment the start pointer.
4. At each step, calculate the length of the current substring (end - start) and keep track of the maximum length.
5. Return the maximum length.

Here is the Python code for the above steps:

```python
def lengthOfLongestSubstring(s):
    start = end = max_length = 0
    char_dict = {}
    
    while end < len(s):
        if s[end] not in char_dict:
            char_dict[s[end]] = 1
            max_length = max(max_length, end - start + 1)
            end += 1
        else:
            del char_dict[s[start]]
            start += 1
    
    return max_length
```

This function works by maintaining a sliding window of unique characters and adjusting its size as necessary by moving the start and end pointers. The maximum length of the window at any point is the length of the longest substring without repeating characters.

Knowee AI · Accepted Answer

Sure, here is a step-by-step solution in Python:

1. Initialize two pointers, start and end, to 0. These pointers represent the current substring we are looking at.
2. Initialize a dictionary to keep track of the characters in the current substring and their indices.
3. While the end pointer is less than the length of the string:
    - If the character at the end pointer is not in the dictionary, add it to the dictionary and increment the end pointer.
    - If the character at the end pointer is in the dictionary, remove the character at the start pointer from the dictionary and increment the start pointer.
4. At each step, calculate the length of the current substring (end - start) and keep track of the maximum length.
5. Return the maximum length.

Here is the Python code for the above steps:

```python
def lengthOfLongestSubstring(s):
    start = end = max_length = 0
    char_dict = {}
    
    while end < len(s):
        if s[end] not in char_dict:
            char_dict[s[end]] = 1
            max_length = max(max_length, end - start + 1)
            end += 1
        else:
            del char_dict[s[start]]
            start += 1
    
    return max_length
```

This function works by maintaining a sliding window of unique characters and adjusting its size as necessary by moving the start and end pointers. The maximum length of the window at any point is the length of the longest substring without repeating characters.

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