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  1. Prepare
  2. Python
  3. Collections
  4. DefaultDict Tutorial
  5. Discussions

DefaultDict Tutorial

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1075 Discussions

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  • muk_mandar
     + 0 comments
    lengths = input().split()
target_lst  = []
seek_lst = []
for n in range(int(lengths[0])):
    target_lst.append(input())
for n in range(int(lengths[1])):
    seek_lst.append(input())
 
for n in seek_lst:
    target_index = []
    if n in target_lst:
        for c,x in enumerate(target_lst):
            if x==n:
                target_index.append(str(c+1))
        print(' '.join(target_index))
    else:
        print("-1")

  • nareshpadiyar
     + 0 comments
    from collections import defaultdict
d = defaultdict(list)

line1 = list(map(int, input().split()))

n = line1[0]
m = line1[1]

for i in range(n):
    d['A'].append(input())
    
for j in range(m):
    d['B'].append(input())
    

for p in list(d['B']):
    if p in list(d['A']):
        output_list = []
        for q in range(len(list(d['A']))):
            if p == list(d['A'])[q]:
                output_list.append(str(q+1))
        print(" ".join(output_list))
    else:
        print("-1")

  • singhshrajan
     + 0 comments
    1. from collections import defaultdict
    2. n,m = map(int,input().split())
    3. d = defaultdict(list)
    4. for i in range(n):
    5. z = input()
    6. d[z].append(i+1)
    7. for j in range(m):
    8. j = input()
    9. if j in d:
    10. print(*d[j])
    11. else:
    12. print(-1)

  • manishranjanman1
     + 0 comments
    from collections import defaultdict
n,m = map(int,input().split())
d = defaultdict(list)
for i in range(n):
    A = input()
    d[A].append(i+1)

for j in range(m):
    B = input()
    if B in d.keys():
        val = d[B]
        print(*val)
    else:
        print(-1)

  • rememberharis
     + 0 comments

    from collections import defaultdict n,m = list(map(int, input().split()))

    A = defaultdict(list) for i in range(1, n+1): A[input()].append(i)

    for _ in range(m): print(*A[input()] or [-1])