[BAEKJOON] 1157๋ฒˆ : ๋‹จ์–ด ๊ณต๋ถ€

2023. 7. 24. 21:14ยท ๐Ÿ–ฅ๏ธ Computer/Algorithm Solution

ํŒŒ์ด์ฌ์œผ๋กœ ์•Œ๊ณ ๋ฆฌ์ฆ˜์„ ํ’€์–ด๋ณด์ž.

ํŒŒ์ด์ฌ์ด๋ž‘ ์นœํ•ด์ง€๊ธฐ์œ„ํ•ด ๋ธŒ๋ก ์ฆˆ ๋ฌธ์ œ๋ถ€ํ„ฐ ์ฐจ๊ทผ์ฐจ๊ทผ ํ’€์–ด๋ณด๋ ค๊ณ ํ•œ๋‹ค.

 

๋‹ค์Œ ๋ฌธ์ œ๋ฅผ ํ’€๋ฉด์„œ ํŒŒ์ด์ฌ์˜ dictionary๋ฅผ ํ•™์Šตํ–ˆ๋‹ค.

 

๋ฌธ์ œ

์•ŒํŒŒ๋ฒณ ๋Œ€์†Œ๋ฌธ์ž๋กœ ๋œ ๋‹จ์–ด๊ฐ€ ์ฃผ์–ด์ง€๋ฉด, ์ด ๋‹จ์–ด์—์„œ ๊ฐ€์žฅ ๋งŽ์ด ์‚ฌ์šฉ๋œ ์•ŒํŒŒ๋ฒณ์ด ๋ฌด์—‡์ธ์ง€ ์•Œ์•„๋‚ด๋Š” ํ”„๋กœ๊ทธ๋žจ์„ ์ž‘์„ฑํ•˜์‹œ์˜ค. ๋‹จ, ๋Œ€๋ฌธ์ž์™€ ์†Œ๋ฌธ์ž๋ฅผ ๊ตฌ๋ถ„ํ•˜์ง€ ์•Š๋Š”๋‹ค.

์ž…๋ ฅ

์ฒซ์งธ ์ค„์— ์•ŒํŒŒ๋ฒณ ๋Œ€์†Œ๋ฌธ์ž๋กœ ์ด๋ฃจ์–ด์ง„ ๋‹จ์–ด๊ฐ€ ์ฃผ์–ด์ง„๋‹ค. ์ฃผ์–ด์ง€๋Š” ๋‹จ์–ด์˜ ๊ธธ์ด๋Š” 1,000,000์„ ๋„˜์ง€ ์•Š๋Š”๋‹ค.

์ถœ๋ ฅ

์ฒซ์งธ ์ค„์— ์ด ๋‹จ์–ด์—์„œ ๊ฐ€์žฅ ๋งŽ์ด ์‚ฌ์šฉ๋œ ์•ŒํŒŒ๋ฒณ์„ ๋Œ€๋ฌธ์ž๋กœ ์ถœ๋ ฅํ•œ๋‹ค. ๋‹จ, ๊ฐ€์žฅ ๋งŽ์ด ์‚ฌ์šฉ๋œ ์•ŒํŒŒ๋ฒณ์ด ์—ฌ๋Ÿฌ ๊ฐœ ์กด์žฌํ•˜๋Š” ๊ฒฝ์šฐ์—๋Š” ?๋ฅผ ์ถœ๋ ฅํ•œ๋‹ค.

ํŒŒ์ด์ฌ์ด๋ž‘ ์นœํ•ด์ง€๊ธฐ

dictionary ์‚ฌ์šฉํ•˜๊ธฐ

python์˜ dictionary๋Š” key, value ํ˜•ํƒœ์˜ ์ž๋ฃŒํ˜•์œผ๋กœ java์˜ Map๊ณผ ์œ ์‚ฌํ•œ ํ˜•ํƒœ๋ฅผ ๋„๊ณ ์žˆ๋‹ค.

python์˜ dictionary๋Š” ์ˆœ์„œ๊ฐ€ ์—†๋‹ค.

 

๋‹ค์Œ๊ณผ ๊ฐ™์ด ์„ ์–ธํ•˜๊ณ  ๊ฐ’์„ ๋ณ€๊ฒฝํ•  ์ˆ˜ ์žˆ๋‹ค.

dic = {'a': 1, 'b': 2}

dic['a'] = 4

 

max ํ•จ์ˆ˜์‚ฌ์šฉํ•˜๊ธฐ

python์˜ max, min ํ•จ์ˆ˜๋Š” iteratableํ•œ ์ž๋ฃŒํ˜•์„ ๋„ฃ์œผ๋ฉด ํ•ด๋‹น ๊ฐ’์—์„œ ์ตœ๋Œ€, ์ตœ์†Œ๊ฐ’์„ ๊ฐ€์ ธ์˜จ๋‹ค.

 

dic = { 'a':1, 'b':2 }
max(

 

๋‘ ํ•จ์ˆ˜์˜ ์ฝœ๋ผ๋ณด

๋‘ ํ•จ์ˆ˜๋ฅผ ์ ์ ˆํžˆ ์„ž์–ด์„œ ์‚ฌ์šฉํ•˜์—ฌ ๊ฐ€์žฅ ๋งŽ์ด ์‚ฌ์šฉ๋œ ์•ŒํŒŒ๋ฒณ์„ ๋ฝ‘์•„๋ณด์ž.

max ํ•จ์ˆ˜๋ฅผ ์‚ฌ์šฉํ•  ๋•Œ key๋ผ๋Š” ์ธ์ž๋ฅผ ์‚ฌ์šฉํ•˜๋ฉด ์–ด๋–ค ๊ฐ’์„ ๊ธฐ์ค€์œผ๋กœ ์ตœ๋Œ“๊ฐ’์„ ๊ตฌํ•  ์ง€ ์ง€์ •ํ•  ์ˆ˜ ์žˆ๋‹ค.

์•„๋ž˜ ์ฝ”๋“œ๋ฅผ ํ•ด์„ํ•˜๋ฉด dictionary์—์„œ get์œผ๋กœ ์–ป์–ด์˜ค๋Š” value๋ฅผ ๊ธฐ์ค€์œผ๋กœ ์ตœ๋Œ“๊ฐ’์„ ๊ตฌํ•œ๋‹ค. ๋ผ๊ณ  ๋ณผ ์ˆ˜ ์žˆ๋‹ค.

str = input().upper()

dic = {}

for i in str:
    if i not in dic:
        dic[i] = 0
    dic[i] += 1

print(max(dic, key=dic.get))

์ด์ œ ๋ฌธ์ œ ์กฐ๊ฑด์„ ๋งŒ์กฑ์‹œํ‚ค๊ธฐ ์œ„ํ•ด ๋‘๊ฐœ ์ด์ƒ์˜ ์ตœ๋Œ“๊ฐ’์ด ์กด์žฌํ•˜๋ฉด ?๋ฅผ ๋„์šฐ๊ธฐ๋งŒ ํ•˜๋ฉด ๋œ๋‹ค.

์ฝ”๋“œ

str = input().upper()

dic = {}

for i in str:
    if i not in dic:
        dic[i] = 0
    dic[i] += 1

result = []
m = max(dic.values())
for key, val in dic.items():
    if m == val:
        result.append(key)

if len(result) != 1:
    print('?')
else:
    print(result[0])

 

 

 

https://www.acmicpc.net/problem/1157

 

1157๋ฒˆ: ๋‹จ์–ด ๊ณต๋ถ€

์•ŒํŒŒ๋ฒณ ๋Œ€์†Œ๋ฌธ์ž๋กœ ๋œ ๋‹จ์–ด๊ฐ€ ์ฃผ์–ด์ง€๋ฉด, ์ด ๋‹จ์–ด์—์„œ ๊ฐ€์žฅ ๋งŽ์ด ์‚ฌ์šฉ๋œ ์•ŒํŒŒ๋ฒณ์ด ๋ฌด์—‡์ธ์ง€ ์•Œ์•„๋‚ด๋Š” ํ”„๋กœ๊ทธ๋žจ์„ ์ž‘์„ฑํ•˜์‹œ์˜ค. ๋‹จ, ๋Œ€๋ฌธ์ž์™€ ์†Œ๋ฌธ์ž๋ฅผ ๊ตฌ๋ถ„ํ•˜์ง€ ์•Š๋Š”๋‹ค.

www.acmicpc.net

 

'๐Ÿ–ฅ๏ธ Computer > Algorithm Solution' ์นดํ…Œ๊ณ ๋ฆฌ์˜ ๋‹ค๋ฅธ ๊ธ€

[BAEKJOON] 18110๋ฒˆ : solved.ac  (0) 2023.07.25
[BAEKJOON] 27866๋ฒˆ : ๋ฌธ์ž์™€ ๋ฌธ์ž์—ด  (0) 2023.07.25
[BAEKJOON] 10814๋ฒˆ : ๋‚˜์ด์ˆœ ์ •๋ ฌ  (0) 2021.12.11
[BAEKJOON] 2960๋ฒˆ : ์—๋ผํ† ์Šคํ…Œ๋„ค์Šค์˜ ์ฒด  (0) 2020.07.09
[LeetCode] 389. Find the Difference  (1) 2020.03.25
  1. ํŒŒ์ด์ฌ์ด๋ž‘ ์นœํ•ด์ง€๊ธฐ
  2. ์ฝ”๋“œ
'๐Ÿ–ฅ๏ธ Computer/Algorithm Solution' ์นดํ…Œ๊ณ ๋ฆฌ์˜ ๋‹ค๋ฅธ ๊ธ€
  • [BAEKJOON] 18110๋ฒˆ : solved.ac
  • [BAEKJOON] 27866๋ฒˆ : ๋ฌธ์ž์™€ ๋ฌธ์ž์—ด
  • [BAEKJOON] 10814๋ฒˆ : ๋‚˜์ด์ˆœ ์ •๋ ฌ
  • [BAEKJOON] 2960๋ฒˆ : ์—๋ผํ† ์Šคํ…Œ๋„ค์Šค์˜ ์ฒด
_์ฃผ๋…ธ
_์ฃผ๋…ธ
_์ฃผ๋…ธ
juno.log
_์ฃผ๋…ธ
์ „์ฒด
์˜ค๋Š˜
์–ด์ œ
  • ๋ถ„๋ฅ˜ ์ „์ฒด๋ณด๊ธฐ (88)
    • ๐Ÿ’ฌ Language (15)
      • C (1)
      • C++ (1)
      • Java (12)
    • ๐Ÿ–ฅ๏ธ Computer (46)
      • Data Structure (2)
      • Computer Science (3)
      • Algorithm Solution (41)
    • ๐ŸŒฑ Spring (14)
    • ๐Ÿ“ฆ Database (1)
    • ๐Ÿฅณ Project (6)
      • kakao chatbot (6)
    • ๐Ÿ˜† Daily (5)
      • ์žก๋‹ด (5)
      • TIL (0)

๋ธ”๋กœ๊ทธ ๋ฉ”๋‰ด

  • ํ™ˆ
  • ๋ธ”๋กœ๊ทธ ๊ด€๋ฆฌ
  • GitHub
  • Velog

์ธ๊ธฐ ๊ธ€

hELLO ยท Designed By ์ •์ƒ์šฐ.v4.2.0
_์ฃผ๋…ธ
[BAEKJOON] 1157๋ฒˆ : ๋‹จ์–ด ๊ณต๋ถ€
์ƒ๋‹จ์œผ๋กœ

ํ‹ฐ์Šคํ† ๋ฆฌํˆด๋ฐ”

๊ฐœ์ธ์ •๋ณด

  • ํ‹ฐ์Šคํ† ๋ฆฌ ํ™ˆ
  • ํฌ๋Ÿผ
  • ๋กœ๊ทธ์ธ

๋‹จ์ถ•ํ‚ค

๋‚ด ๋ธ”๋กœ๊ทธ

๋‚ด ๋ธ”๋กœ๊ทธ - ๊ด€๋ฆฌ์ž ํ™ˆ ์ „ํ™˜
Q
Q
์ƒˆ ๊ธ€ ์“ฐ๊ธฐ
W
W

๋ธ”๋กœ๊ทธ ๊ฒŒ์‹œ๊ธ€

๊ธ€ ์ˆ˜์ • (๊ถŒํ•œ ์žˆ๋Š” ๊ฒฝ์šฐ)
E
E
๋Œ“๊ธ€ ์˜์—ญ์œผ๋กœ ์ด๋™
C
C

๋ชจ๋“  ์˜์—ญ

์ด ํŽ˜์ด์ง€์˜ URL ๋ณต์‚ฌ
S
S
๋งจ ์œ„๋กœ ์ด๋™
T
T
ํ‹ฐ์Šคํ† ๋ฆฌ ํ™ˆ ์ด๋™
H
H
๋‹จ์ถ•ํ‚ค ์•ˆ๋‚ด
Shift + /
โ‡ง + /

* ๋‹จ์ถ•ํ‚ค๋Š” ํ•œ๊ธ€/์˜๋ฌธ ๋Œ€์†Œ๋ฌธ์ž๋กœ ์ด์šฉ ๊ฐ€๋Šฅํ•˜๋ฉฐ, ํ‹ฐ์Šคํ† ๋ฆฌ ๊ธฐ๋ณธ ๋„๋ฉ”์ธ์—์„œ๋งŒ ๋™์ž‘ํ•ฉ๋‹ˆ๋‹ค.