题解 | #MP3光标位置#
MP3光标位置
https://www.nowcoder.com/practice/eaf5b886bd6645dd9cfb5406f3753e15
a = int(input().strip())
b = input().strip()
lista = [x+1 for x in range(a)]
index1,index2,size1 = 0,0,4
listb = lista[index1:index1+size1]
if a <= size1:
for i in b:
if i == "U" and index2 == 0:
index2 = a-1
elif i == "U":
index2 -=1
if i == "D" and index2 == a-1:
index2 = 0
elif i == "D":
index2 +=1
for i in lista:
print(i,end=" ")
print()
print(lista[index2])
else:
for i in b:
if i == "U":
if index2 == index1 == 0:
index1 = a-4
index2 = a-1
elif index2 == index1:
index1 -=1
index2 = index1
else:
index2 -=1
if i == "D":
if index2 == index1+size1-1 == a-1:
index1 = 0
index2 = index1
elif index2 == index1+size1-1:
index1 +=1
index2 +=1
else:
index2 +=1
listb = lista[index1:index1+size1]
for i in listb:
print(i,end=" ")
print()
print(lista[index2])
