gistfile1.py

def answer(meetings):
    available_time = 0;
    num_meetings = 0;

    while meetings:
        mdx = meeting_with_earliest_end_time(meetings)
        m = meetings[mdx]
        
        if m[0] >= available_time:
            available_time = m[1]
            num_meetings += 1
        
        meetings.pop(mdx)
    
    return num_meetings

def meeting_with_earliest_end_time(meetings):    
    earliest_end_time_index = 0
    earliest_end_time = meetings[0][1]
    
    for idx, val in enumerate(meetings):
        if val[1] < earliest_end_time:
            earliest_end_time_index = idx
            earliest_end_time = val[1]
    
    return earliest_end_time_index