leetcode problem

longest-substring-without-repeating-characters.py

#!/usr/bin/python3

input_string = "abcabcbb"
starting_idx = 0; max_length = 0; length = 0
i,j=0,0
for i in range(len(input_string)):
    for j in range(i-1, starting_idx-1, -1):
        if (input_string[j] == input_string[i]):
            starting_idx = j + 1
            length = i - j
            break
    else:
        length += 1
    max_length = max(max_length, length)
    
print(max_length)