レベルアップ問題集Python3 文字列処理メニュー

# 文字列の出力
# utf-8
print("paiza")

# 文字列の受け取り
# utf-8
s = input()
print(s)

# i文字目の出力
# utf-8
s = input()
i = int(input())

print(s[i-1])

# 文字列の文字数
# utf-8
s = input()

if s == "paiza":
    print("YES")
else:
    print("NO")

# 文字の検索
# utf-8
s = input()
print(len(s))

# 文字列の連結
# utf-8
n = int(input())

ans = ""
for _ in range(n):
    ans += input()

print(ans)

# 部分文字列
# utf-8
s = input()

values = input().split()
i = int(values[0])
j = int(values[1])

print(s[i-1:j])

# 文字列の挿入
# utf-8
s = input()
t = input()
n = int(input())

print(s[:n] + t + s[n:])

# 文字列の書き換え
# utf-8
s = input()

values = input().split()
i = int(values[0])
c = values[1]

print(s[:i-1] + c + s[i:])

# 文字列から数値への変換
# utf-8
s = input()
print(int(s) - 813)

# 数値から文字列への変換
# utf-8
x = int(input())
y = int(input())
n = int(input())

print(str(x + y)[n-1])

# 大文字から小文字への変換
# utf-8
s = input()
print(s.lower())

# 小文字から大文字への変換
# utf-8
s = input()
print(s.upper())

# 大文字小文字の反転
# utf-8
s = input()

for ele in s:
    if ele.islower():
        print(ele.upper(), end="")
    else:
        print(ele.lower(), end="")

print()

# 文字列の検索
# utf-8
s = input()
t = input()

if t in s:
    print("YES")
else:
    print("NO")

# 文字列の反転
# utf-8
s = input()
print(s[::-1])

# 回文判定
# utf-8
s = input()
r = s[::-1]

if s == r:
    print("YES")
else:
    print("NO")
    
# 文字列の分割
# utf-8
s = input().split(",")

for ele in s:
    print(ele)
    
# 日時データの変換その1
# utf-8
s = input()

y = s[:4]
M = s[5:7]
d = s[8:10]
h = s[11:13]
m = s[14:]

print(y)
print(M)
print(d)
print(h)
print(m)

# 日時データの変換その2
# utf-8
s = input()

y = s[:4]
M = s[5:7]
d = s[8:10]
h = s[11:13]
m = s[14:]

print(y)
print(M)
print(d)
print(h)
print(m)

# 数値判定
# utf-8
s = input()

if s.isdigit():
    print("YES")
else:
    print("NO")
    
# 重複の削除
# utf-8
s = input()

st = set()
for ele in s:
    if ele not in st:
        st.add(ele)
        print(ele, end="")

# パスワード作成
# utf-8
N = int(input())
Q = int(input())
n = [0] * Q
c = [""] * Q

for i in range(Q):
    values = input().split()
    n[i] = int(values[0]) - 1
    c[i] = values[1]

C = input()

ans = [C] * N
for i in range(Q):
    ans[n[i]] = c[i]

print("".join(ans))

# 表記の訂正
# utf-8
s = input()

if "." not in s:
    i = 0
    while i < len(s):
        if s[i] != "0":
            break
        i += 1

    if i == len(s):
        print(0)
    else:
        print(s[i:])
else:
    ans = ""
    start = 0

    for i in range(len(s)):
        if s[i] != "0":
            if s[i] == ".":
                ans += "0"

            start = i
            break

    last = 0
    for i in range(len(s)):
        if s[i] != "0":
            last = i

    first_dot = s.find(".")
    for i in range(start, last + 1):
        if s[i] != ".":
            ans += s[i]
        elif i == first_dot:
            ans += s[i]

    print(ans)
    
# 数式の計算(1桁)
# utf-8
s = input()

ans = 0
add = True
for i in range(len(s)):
    if i % 2 == 0:
        if add:
            ans += int(s[i])
        else:
            ans -= int(s[i])
    else:
        if s[i] == "+":
            add = True
        else:
            add = False

print(ans)

# 数式の計算
# utf-8
s = input()

s += "."
add = True
ans = 0
t = ""
for ele in s:
    if ele.isdigit():
        t += ele
    else:
        if add:
            ans += int(t)
        else:
            ans -= int(t)

        if ele == "+":
            add = True
        else:
            add = False

        t = ""

print(ans)

# 巨大な数の足し算(繰り上がりなし)
# utf-8
s = input()
t = input()

ans = ""
for i in range(len(s)):
    ans += str(int(s[i]) + int(t[i]))

print(ans)

# 巨大な数の足し算
# utf-8
s = input()
t = input()

ans = ""
upper = 0
for i in range(len(s) - 1, -1, -1):
    z = int(s[i]) + int(t[i]) + upper
    upper = z // 10
    ans = str(z % 10) + ans

    if i == 0 and upper > 0:
        ans = str(upper) + ans

print(ans)

# 巨大な数のかけ算
# utf-8
s = input()
t = int(input())

if t == 0:
    print(0)
else:
    ans = ""
    upper = 0
    for i in range(len(s) - 1, -1, -1):
        z = int(s[i]) * t + upper
        upper = z // 10
        ans = str(z % 10) + ans

        if i == 0 and upper > 0:
            ans = str(upper) + ans

    print(ans)