compressString

#error was at the bottom of the code. I was increasing
#i by 1 when it was being increaded by assigning j to i
#difficult exercise to put together...


class Solution:
    def compressString(self, chars):
        write_index = 0
        
        i = 0
        
        
        while i < len(chars):
            j = i+1
            while j < len(chars) and chars[j] == chars[i]:
                j += 1
            chars[write_index] = chars[i]
            write_index += 1
            if j - i > 1:
                    count = str(j-i)
                    print(len(count))
                    #slice below using :
                    chars[write_index:write_index+len(count)] = count
                    print(chars[write_index:write_index+len(count)])               
                    write_index += len(count)
            i = j
        
                    
            #i += 1
        del chars[write_index:]
        return len(chars)
        
      
myVar = Solution()     
myVar.compressString(["a", "a", "b", "b", "c", "c", "c"])