diff --git "a/homeworks/B18355/B18355-\346\270\205\350\222\270-s2\347\217\255\347\272\247\344\270\252\344\272\272\346\200\273\347\273\223.docx" "b/homeworks/B18355/B18355-\346\270\205\350\222\270-s2\347\217\255\347\272\247\344\270\252\344\272\272\346\200\273\347\273\223.docx"
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diff --git a/homeworks/B18355/homework1/F4-homework2.py b/homeworks/B18355/homework1/F4-homework2.py
new file mode 100644
index 0000000..c3d1342
--- /dev/null
+++ b/homeworks/B18355/homework1/F4-homework2.py
@@ -0,0 +1,222 @@
+# -*- coding: utf-8 -*-
+
+# 解决 'ascii' codec can't decode byte 0xe5的问题！！（以下三句
+import sys
+reload(sys)
+sys.setdefaultencoding('utf8')
+
+import codecs
+import os
+#1. 读取文件
+#['aa', 'aaa-bbb-sds'] => ['aa', 'aaa', 'bbb', 'sds']
+def word_split(words):
+    new_list = []
+    for word in words:
+        if '-' not in word:
+            new_list.append(word)
+        else:
+            lst = word.split('-')
+            new_list.extend(lst)
+    return new_list
+
+
+def read_file(file_path):
+    f = codecs.open(file_path, 'r', "utf-8") #打开文件
+    lines = f.readlines()
+    word_list = []
+    for line in lines:
+        line = line.strip()
+        words = line.split(" ") #用空格分割
+        words = word_split(words) #用-分割
+        word_list.extend(words)
+    return word_list
+
+def get_file_from_folder(folder_path):
+    file_paths = []
+    for root, dirs, files in os.walk(folder_path):
+        for file in files:
+            file_path = os.path.join(root, file)
+            file_paths.append(file_path)
+    return file_paths
+
+#读取多文件里的单词
+def read_files(file_paths):
+    final_words = []
+    for path in file_paths:
+        final_words.extend(read_file(path))
+    return final_words
+
+
+#2.获取格式化之后的单词
+def format_word(word):
+    fmt = 'abcdefghijklmnopqrstuvwxyz-'
+    for char in word:
+        if char not in fmt:
+            word = word.replace(char, '')
+    return word.lower()
+
+def format_words(words):
+    word_list = []
+    for word in words:
+        wd = format_word(word)
+        if wd:
+            word_list.append(wd)
+    return word_list
+
+#3. 统计单词数目
+# {'aa':4, 'bb':1}
+def statictcs_words(words):
+    s_word_dict = {}
+    for word in words:
+        if s_word_dict.has_key(word):
+            s_word_dict[word] = s_word_dict[word] + 1
+        else:
+            s_word_dict[word] = 1
+    #排序
+    sorted_dict = sorted(s_word_dict.iteritems(), key=lambda d: d[1], reverse=True)
+    return sorted_dict
+
+#4.输出成csv
+def print_to_csv(word_percent_dict, to_file_path ): # volcaulay_list is a dict
+    nfile = open(to_file_path,'w+')
+    for val in word_percent_dict:
+        if len(val) == 4:
+            nfile.write("%s,%s,%0.2f,%s \n" % (val[0], str(val[1]), val[2], val[3]))
+        elif len(val) == 3:
+            nfile.write("%s,%s,%0.2f\n" % (val[0], str(val[1]), val[2]))
+        elif len(val) == 2:
+            nfile.write("%s,%s\n" % (val[0], val[1]))
+    nfile.close()
+
+def tup2list(volcaulay_list_tup):
+    volcaulay_list_lst = []
+    for val in volcaulay_list_tup:
+        volcaulay_list_lst.append(list(val))
+    return volcaulay_list_lst
+
+#5.获取相应的百分比列表
+def word_percent(volcaulay_list_lst, total_count):
+    word_percent_list = []
+    current_count = 0
+    for val in volcaulay_list_lst:
+        num = val[1]
+        current_count = current_count + num
+        word_perct = (float(current_count)/float(total_count)) * 100
+        val.append(word_perct)
+        word_percent_list.append(val)
+    return word_percent_list
+
+def select_word(word_percent_list, rate_range):
+    word_list_recite = []
+    start = rate_range[0] * 100
+    end = rate_range[1] * 100
+    for val in word_percent_list:
+        if val[2] >= start and val[2] <= end:
+            word_list_recite.append(val)
+    return word_list_recite
+
+def read_explanation(file_path):
+    f = codecs.open(file_path, 'r', "utf-8") #打开文件
+    lines = f.readlines()
+    word_list = []
+    word_list_utf = []
+    for line in lines:
+        line = line.strip()
+        words = line.split("   ") #用空格分割
+        word_list.append(words)
+    for word in word_list:
+        word_utf = []
+        for index in word:
+            word_new = index.encode("utf-8")
+            word_utf.append(word_new)
+            word_list_utf.append(word_utf)
+    return word_list_utf
+
+def add_explanation(word_list_recite, explanation_list):
+    words_list = []
+    explanation = []
+    fword_list_recite =[]
+    fword_list_noExp =[]
+    for words in explanation_list:
+        if len(words) == 2:
+            words_list.append(words[0])
+            explanation.append(words[1])
+    for word in word_list_recite:
+        if word[0] in words_list:
+            idx = words_list.index(word[0])
+            word.append(explanation[idx])
+            fword_list_recite.append(word)
+        else:
+            fword_list_noExp.append(word)
+    return fword_list_recite , fword_list_noExp
+
+def dictkey_sort(dict):
+    keys = dict.keys()
+    keys.sort()
+    return [dict[key] for key in keys],keys
+
+def words_sort(fword_list_recite):
+    words_order_dict = {}
+    words_order_list = []
+    for item in fword_list_recite:
+        words_order_dict[item[0]] = item[3]
+    lst_value, lst_key = dictkey_sort(words_order_dict)
+    for index in range(0,len(lst_key)):
+        words_order_list.append([lst_key[index],lst_value[index]])
+    return words_order_list
+
+
+
+
+def get_everyday_lst(fword_list_recite, is_ordered, amount_everyday):
+    num_lst = len(fword_list_recite) / amount_everyday + 1
+    words_dayslist = []
+    if is_ordered:
+        tword_list_recite = words_sort(fword_list_recite)
+    else:
+        tword_list_recite = fword_list_recite
+
+    for index in range(0, num_lst):
+        words_dayslist.append(tword_list_recite[(index * amount_everyday): ((index + 1) * amount_everyday)])
+    words_dayslist.append(tword_list_recite[(len(tword_list_recite) - amount_everyday * (num_lst - 1)):])
+
+    return words_dayslist
+
+def main():
+    get_wordlist = True
+    #1. 读取文本
+    words = read_files(get_file_from_folder('data1'))
+    print '获取了未格式化的单词 %d 个' % (len(words))
+    #2. 清洗文本
+    f_words = format_words(words)
+    total_word_count = len(f_words)
+    print '获取了已经格式化的单词 %d 个' %(len(f_words))
+    #3. 统计单词和排序
+    word_list = statictcs_words(f_words)
+    #4. 将tuple格式转为可变的list格式
+    volcaulay_list_lst = tup2list(word_list)
+    #5.计算得到单词频次
+    word_percent_dict = word_percent(volcaulay_list_lst,total_word_count)
+    #6. 截取这一部分的单词
+    if get_wordlist:
+        start_and_end = [0.5, 0.7]  #
+        word_list_recite = select_word(word_percent_dict, start_and_end)
+    else:
+        word_list_recite = word_percent_dict
+
+    print '需要背诵的单词有%d个' % len(word_list_recite)
+    explanation_list = read_explanation('8000-words.txt')
+    fword_list_recite, fword_list_noExp = add_explanation(word_list_recite, explanation_list)
+    #4. 输出文件
+    print_to_csv(fword_list_recite, 'output/recite_all.csv' )  #查到释义的单词
+    print_to_csv(fword_list_noExp, 'output/Day5_2.csv')  #未查到释义的单词
+
+    amount_everyday = 100
+    is_ordered = True
+    words_dayslist = get_everyday_lst(fword_list_recite, is_ordered, amount_everyday)
+    for index in range(0, len(words_dayslist) - 1 ):
+        wd_lst = words_dayslist[index]
+        filename = 'output/day' + str(index) + '.csv'
+        print_to_csv(wd_lst, filename)
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git "a/homeworks/B18355/homework1/day6 \346\211\223\345\215\241 code.png" "b/homeworks/B18355/homework1/day6 \346\211\223\345\215\241 code.png"
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diff --git a/homeworks/B18355/homework1/homework2.py b/homeworks/B18355/homework1/homework2.py
new file mode 100644
index 0000000..c3d1342
--- /dev/null
+++ b/homeworks/B18355/homework1/homework2.py
@@ -0,0 +1,222 @@
+# -*- coding: utf-8 -*-
+
+# 解决 'ascii' codec can't decode byte 0xe5的问题！！（以下三句
+import sys
+reload(sys)
+sys.setdefaultencoding('utf8')
+
+import codecs
+import os
+#1. 读取文件
+#['aa', 'aaa-bbb-sds'] => ['aa', 'aaa', 'bbb', 'sds']
+def word_split(words):
+    new_list = []
+    for word in words:
+        if '-' not in word:
+            new_list.append(word)
+        else:
+            lst = word.split('-')
+            new_list.extend(lst)
+    return new_list
+
+
+def read_file(file_path):
+    f = codecs.open(file_path, 'r', "utf-8") #打开文件
+    lines = f.readlines()
+    word_list = []
+    for line in lines:
+        line = line.strip()
+        words = line.split(" ") #用空格分割
+        words = word_split(words) #用-分割
+        word_list.extend(words)
+    return word_list
+
+def get_file_from_folder(folder_path):
+    file_paths = []
+    for root, dirs, files in os.walk(folder_path):
+        for file in files:
+            file_path = os.path.join(root, file)
+            file_paths.append(file_path)
+    return file_paths
+
+#读取多文件里的单词
+def read_files(file_paths):
+    final_words = []
+    for path in file_paths:
+        final_words.extend(read_file(path))
+    return final_words
+
+
+#2.获取格式化之后的单词
+def format_word(word):
+    fmt = 'abcdefghijklmnopqrstuvwxyz-'
+    for char in word:
+        if char not in fmt:
+            word = word.replace(char, '')
+    return word.lower()
+
+def format_words(words):
+    word_list = []
+    for word in words:
+        wd = format_word(word)
+        if wd:
+            word_list.append(wd)
+    return word_list
+
+#3. 统计单词数目
+# {'aa':4, 'bb':1}
+def statictcs_words(words):
+    s_word_dict = {}
+    for word in words:
+        if s_word_dict.has_key(word):
+            s_word_dict[word] = s_word_dict[word] + 1
+        else:
+            s_word_dict[word] = 1
+    #排序
+    sorted_dict = sorted(s_word_dict.iteritems(), key=lambda d: d[1], reverse=True)
+    return sorted_dict
+
+#4.输出成csv
+def print_to_csv(word_percent_dict, to_file_path ): # volcaulay_list is a dict
+    nfile = open(to_file_path,'w+')
+    for val in word_percent_dict:
+        if len(val) == 4:
+            nfile.write("%s,%s,%0.2f,%s \n" % (val[0], str(val[1]), val[2], val[3]))
+        elif len(val) == 3:
+            nfile.write("%s,%s,%0.2f\n" % (val[0], str(val[1]), val[2]))
+        elif len(val) == 2:
+            nfile.write("%s,%s\n" % (val[0], val[1]))
+    nfile.close()
+
+def tup2list(volcaulay_list_tup):
+    volcaulay_list_lst = []
+    for val in volcaulay_list_tup:
+        volcaulay_list_lst.append(list(val))
+    return volcaulay_list_lst
+
+#5.获取相应的百分比列表
+def word_percent(volcaulay_list_lst, total_count):
+    word_percent_list = []
+    current_count = 0
+    for val in volcaulay_list_lst:
+        num = val[1]
+        current_count = current_count + num
+        word_perct = (float(current_count)/float(total_count)) * 100
+        val.append(word_perct)
+        word_percent_list.append(val)
+    return word_percent_list
+
+def select_word(word_percent_list, rate_range):
+    word_list_recite = []
+    start = rate_range[0] * 100
+    end = rate_range[1] * 100
+    for val in word_percent_list:
+        if val[2] >= start and val[2] <= end:
+            word_list_recite.append(val)
+    return word_list_recite
+
+def read_explanation(file_path):
+    f = codecs.open(file_path, 'r', "utf-8") #打开文件
+    lines = f.readlines()
+    word_list = []
+    word_list_utf = []
+    for line in lines:
+        line = line.strip()
+        words = line.split("   ") #用空格分割
+        word_list.append(words)
+    for word in word_list:
+        word_utf = []
+        for index in word:
+            word_new = index.encode("utf-8")
+            word_utf.append(word_new)
+            word_list_utf.append(word_utf)
+    return word_list_utf
+
+def add_explanation(word_list_recite, explanation_list):
+    words_list = []
+    explanation = []
+    fword_list_recite =[]
+    fword_list_noExp =[]
+    for words in explanation_list:
+        if len(words) == 2:
+            words_list.append(words[0])
+            explanation.append(words[1])
+    for word in word_list_recite:
+        if word[0] in words_list:
+            idx = words_list.index(word[0])
+            word.append(explanation[idx])
+            fword_list_recite.append(word)
+        else:
+            fword_list_noExp.append(word)
+    return fword_list_recite , fword_list_noExp
+
+def dictkey_sort(dict):
+    keys = dict.keys()
+    keys.sort()
+    return [dict[key] for key in keys],keys
+
+def words_sort(fword_list_recite):
+    words_order_dict = {}
+    words_order_list = []
+    for item in fword_list_recite:
+        words_order_dict[item[0]] = item[3]
+    lst_value, lst_key = dictkey_sort(words_order_dict)
+    for index in range(0,len(lst_key)):
+        words_order_list.append([lst_key[index],lst_value[index]])
+    return words_order_list
+
+
+
+
+def get_everyday_lst(fword_list_recite, is_ordered, amount_everyday):
+    num_lst = len(fword_list_recite) / amount_everyday + 1
+    words_dayslist = []
+    if is_ordered:
+        tword_list_recite = words_sort(fword_list_recite)
+    else:
+        tword_list_recite = fword_list_recite
+
+    for index in range(0, num_lst):
+        words_dayslist.append(tword_list_recite[(index * amount_everyday): ((index + 1) * amount_everyday)])
+    words_dayslist.append(tword_list_recite[(len(tword_list_recite) - amount_everyday * (num_lst - 1)):])
+
+    return words_dayslist
+
+def main():
+    get_wordlist = True
+    #1. 读取文本
+    words = read_files(get_file_from_folder('data1'))
+    print '获取了未格式化的单词 %d 个' % (len(words))
+    #2. 清洗文本
+    f_words = format_words(words)
+    total_word_count = len(f_words)
+    print '获取了已经格式化的单词 %d 个' %(len(f_words))
+    #3. 统计单词和排序
+    word_list = statictcs_words(f_words)
+    #4. 将tuple格式转为可变的list格式
+    volcaulay_list_lst = tup2list(word_list)
+    #5.计算得到单词频次
+    word_percent_dict = word_percent(volcaulay_list_lst,total_word_count)
+    #6. 截取这一部分的单词
+    if get_wordlist:
+        start_and_end = [0.5, 0.7]  #
+        word_list_recite = select_word(word_percent_dict, start_and_end)
+    else:
+        word_list_recite = word_percent_dict
+
+    print '需要背诵的单词有%d个' % len(word_list_recite)
+    explanation_list = read_explanation('8000-words.txt')
+    fword_list_recite, fword_list_noExp = add_explanation(word_list_recite, explanation_list)
+    #4. 输出文件
+    print_to_csv(fword_list_recite, 'output/recite_all.csv' )  #查到释义的单词
+    print_to_csv(fword_list_noExp, 'output/Day5_2.csv')  #未查到释义的单词
+
+    amount_everyday = 100
+    is_ordered = True
+    words_dayslist = get_everyday_lst(fword_list_recite, is_ordered, amount_everyday)
+    for index in range(0, len(words_dayslist) - 1 ):
+        wd_lst = words_dayslist[index]
+        filename = 'output/day' + str(index) + '.csv'
+        print_to_csv(wd_lst, filename)
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/homeworks/B18355/homework2/pygame_ball.py b/homeworks/B18355/homework2/pygame_ball.py
new file mode 100644
index 0000000..db65324
--- /dev/null
+++ b/homeworks/B18355/homework2/pygame_ball.py
@@ -0,0 +1,83 @@
+# -*- coding: utf-8 -*-
+import pygame
+
+MOU_CON = True
+
+board = pygame.Rect(280, 400, 80, 5)
+#board是rect类的一个实例对象
+#board的上边缘：board.top
+#board的左边缘：board.left
+#board的右边缘：board.right
+circle = [100, 100]
+RADIUS = 10
+SPEED = [5, -5]
+WIDTH = 640
+HEIGHT = 480
+
+def update_ball():
+    if circle[1] - RADIUS == 0:
+        SPEED[1] *= -1
+    if circle[0] + RADIUS == WIDTH or circle[0] - RADIUS == 0:
+        SPEED[0] *= -1
+    if ( circle[0] >= board.left and circle[0] <= board.right ) and (circle[1] + RADIUS == board.top):
+        SPEED[1] *= -1
+
+    circle[0] += SPEED[0]
+    circle[1] += SPEED[1]
+
+    if circle[1] > HEIGHT:
+        circle[0] = 100
+        circle[1] = 100
+
+def draw_surface(screen):
+    screen.fill([255, 255, 255])  # R G B white
+    pygame.draw.circle(screen, [255, 0, 0], circle, RADIUS)
+    pygame.draw.rect(screen, [0, 255, 255], board)
+    pygame.display.flip()
+
+def update_board():
+    if MOU_CON:
+        (x, y) = pygame.mouse.get_pos()
+        board.centerx = x
+
+
+def w_down_cb():
+    pass
+
+def s_down_cb():
+    pass
+
+def a_down_cb():
+    if not MOU_CON:
+        board.centerx -= 5
+
+def d_down_cb():
+    if not MOU_CON:
+        board.centerx += 5
+
+def main():
+    pygame.init()
+    screen = pygame.display.set_mode([WIDTH, HEIGHT])
+    running  = True
+
+    while running:
+        pygame.time.delay(50) # 50ms
+        update_board()
+        update_ball()
+        draw_surface(screen)
+        for event in pygame.event.get():
+            if event.type == pygame.QUIT:
+                running = False
+            elif event.type == pygame.KEYDOWN:
+                if event.key == pygame.K_w:
+                    w_down_cb()
+                elif event.key == pygame.K_s:
+                    s_down_cb()
+                elif event.key == pygame.K_a:
+                    a_down_cb()
+                elif event.key == pygame.K_d:
+                    d_down_cb()
+    pygame.quit()
+
+if __name__ == '__main__':
+    main()
diff --git a/homeworks/B18355/homework2/pygame_snake.py b/homeworks/B18355/homework2/pygame_snake.py
new file mode 100644
index 0000000..f7d2860
--- /dev/null
+++ b/homeworks/B18355/homework2/pygame_snake.py
@@ -0,0 +1,95 @@
+# -*- coding: utf-8 -*-
+import pygame
+import random
+
+SCALE = 20  #地图中有多少格
+SIZE = 20   #每一格的大小
+WIDTH = SCALE * SIZE
+HEIGHT = SCALE * SIZE
+
+DIRECT = [[0,-1],[-1,0],[0,1],[1,0]]
+dirt = 1 #蛇前进的方向
+
+snake = [[4,3],[5,3],[6,3]]
+apple = [3,1]
+
+def screen_show(screen):
+    screen.fill([255,255,255])
+    for body in snake:
+        pygame.draw.rect(screen, [0, 255,0], [body[0]*SIZE,body[1]*SIZE, SIZE - 1, SIZE - 1])
+    pygame.draw.circle(screen, [255, 0, 0], [apple[0]*SIZE + SIZE / 2, apple[1]*SIZE + SIZE / 2], SIZE/2)
+    pygame.display.flip()
+
+def snake_update():
+    global dirt
+    new_body = [0,0]
+    new_body[0] = (snake[0][0] + DIRECT[dirt][0]) % SCALE
+    new_body[1] = (snake[0][1] + DIRECT[dirt][1]) % SCALE
+    if new_body == apple:
+        snake.insert(0, new_body)
+        return True
+    else:
+        snake.insert(0, new_body)
+        snake.pop()
+        return False
+
+def is_lose():
+    if snake.count(snake[0]) >= 2:
+        return True
+    return False
+
+def new_apple():
+    apple[0] = random.randint(0,19)
+    apple[1] = random.randint(0,19)
+
+def w_down_cb():
+    global dirt
+    if dirt % 2 !=0:
+        dirt = 0
+
+def s_down_cb():
+    global dirt
+    if dirt % 2 != 0:
+        dirt = 2
+
+def a_down_cb():
+    global dirt
+    if dirt % 2 != 1:
+        dirt = 1
+
+def d_down_cb():
+    global dirt
+    if dirt % 2 != 1:
+        dirt = 3
+
+def main():
+    pygame.init()
+    screen = pygame.display.set_mode([WIDTH, HEIGHT])
+    running  = True
+
+    while running:
+        pygame.time.delay(200) # 200ms
+        if snake_update():
+            new_apple()
+
+        if is_lose():
+            break
+
+        screen_show(screen)
+        for event in pygame.event.get():
+            if event.type == pygame.QUIT:
+                running = False
+            elif event.type == pygame.KEYDOWN:
+                if event.key == pygame.K_w:
+                    w_down_cb()
+                elif event.key == pygame.K_s:
+                    s_down_cb()
+                elif event.key == pygame.K_a:
+                    a_down_cb()
+                elif event.key == pygame.K_d:
+                    d_down_cb()
+    #YOU LOSE
+    pygame.quit()
+
+if __name__ == '__main__':
+    main()
diff --git a/homeworks/B18355/homework3 b/homeworks/B18355/homework3
new file mode 160000
index 0000000..a2b993e
--- /dev/null
+++ b/homeworks/B18355/homework3
@@ -0,0 +1 @@
+Subproject commit a2b993eedc109b8614eb5b3e47681aba8b57ed73