# 14. 先頭からN行を出力
# 自然数Nをコマンドライン引数などの手段で受け取り，
# 入力のうち先頭のN行だけを表示せよ．確認にはheadコマンドを用いよ．
from knock10 import read_file
import sys
def head(target: str, line: int) -> str:
target = target.split("\n")
return "\n".join(target[:line])
if __name__ == "__main__":
args = sys.argv
n = int(args[1])
target = read_file("hightemp.txt")
print(head(target, n))
# 13. col1.txtとcol2.txtをマージ
# 12で作ったcol1.txtとcol2.txtを結合し，
# 元のファイルの1列目と2列目をタブ区切りで並べたテキストファイルを作成せよ
# 確認にはpasteコマンドを用いよ．
from knock10 import read_file
def write_file(filename: str, target: str) -> None:
with open(filename, "w") as f:
f.write(target)
def merge_two_column(target1: str, target2: str) -> None:
col1 = target1.split("\n")
col2 = target2.split("\n")
output = ""
for c1, c2 in zip(col1, col2):
output += c1 + "\t" + c2 + "\n"
write_file("output.txt", output)
if __name__ == "__main__":
target1 = read_file("col1.txt")
target2 = read_file("col2.txt")
merge_two_column(target1, target2)
# Code
from knock10 import read_file
lines = read_file()
id_value_dic = {}
for index, line in enumerate(lines):
words = line.split('\t')
value = int(words[3])
id_value_dic[index] = value
sorted_ids = sorted(id_value_dic.items(), key=lambda x: x[1], reverse=True)
for id_value in sorted_ids:
index = id_value[0]
print(lines[index])
# Unix command
# $sort popular-names.txt --key=3,3 --numeric-sort --reverse
# Code
from knock10 import read_file
col1_path = './col1.txt'
col2_path = './col2.txt'
col1_lines = read_file(col1_path)
col2_lines = read_file(col2_path)
with open('./combine.txt', 'w') as fp:
for col1, col2 in zip(col1_lines, col2_lines):
fp.write(f'{col1}\t{col2}\n')
# Unix command
# $paste -d '\t' col1_unix col2_unix > combine