π©οΈ μ ν μ λ ¬
- κ°μ₯ μμ λ°μ΄ν°λ₯Ό μ ννμ¬ λ§¨ μμ λ°μ΄ν°λ λ°κΎΈλ μ λ ¬
- μ νμ λ ¬μ μκ° λ³΅μ‘λ :
O(N$^2$)
array = [7, 5, 9, 0, 3, 1, 6, 2, 4, 8]
for i in range(len(array)):
min_index = i
for j in range(i+1, len(array)):
if array[j] < array[min_index]:
min_index = j
array[i], array[min_index] = array[min_index], array[i]
print(array)
π©οΈ μ½μ
μ λ ¬
- νΉμ ν λ°μ΄ν°λ₯Ό μ μ ν μμΉμ μ½μ
νλ μ λ ¬
- μ½μ
μ λ ¬μ μκ° λ³΅μ‘λ :
O(N$^2$)
arr = [7, 5, 9, 0, 3, 1, 6, 2, 4, 8]
for i in range(1, len(arr)):
for j in range(i, 0, -1):
if arr[j-1]> arr[j]:
arr[j-1], arr[j] = arr[j], arr[j-1]
else:
break
print(arr)
π©οΈ ν΅ μ λ ¬
- κΈ°μ€ λ°μ΄ν°(pivot)λ₯Ό μ€μ νκ³ κ·Έ κΈ°μ€λ³΄λ€ ν° λ°μ΄ν°μ μμ λ°μ΄ν°μ μμΉλ₯Ό λ°κΎΈλκ²
- ν΅μ λ ¬μ μκ° λ³΅μ‘λ :
O(*Nlog(N)*)
array = [5, 7, 9, 0, 3, 1, 6, 2, 4, 8]
def quick_sort(array, start, end):
if start >= end:
return
pivot = start
left = start + 1
right = end
while left <= right:
while left <= end and array[left] <= array[pivot]:
left += 1
while right > start and array[right] >= array[pivot]:
right -= 1
if left > right:
array[right], array[pivot] = array[pivot], array[right]
else:
array[left], array[right] = array[right], array[left]
quick_sort(array, start, right-1)
quick_sort(array, right+1, end)
quick_sort(array, 0, len(array)-1)
print(array)
array = [5, 7, 9, 0, 3, 1, 6, 2, 4, 8]
def quick_sort(array):
if len(array) <= 1:
return array
pivot = array[0]
tail = array[1:]
left = [x for x in tail if x <= pivot]
right = [x for x in tail if x > pivot]
return quick_sort(left) + [pivot] + quick_sort(right)
print(quick_sort(array))
π©οΈ κ³μ μ λ ¬
- λ°μ΄ν°μ ν¬κΈ° λ²μκ° μ μ ννμΌλ μ¬μ©νλ λ§€μ° λΉ λ₯Έ μ λ ¬
- κ³μμ λ ¬μ μκ° λ³΅μ‘λ :
O(*N+K*)
array = [7, 5, 9, 0, 3, 1, 6, 2, 9, 1, 4, 8, 0, 5, 2]
count = [0]*(max(array)+1)
for i in array:
count[i] += 1
for i in range(len(count)):
for j in range(count[i]):
print(i, end=' ')
π©οΈ λ¬Έμ μ νμ λ°λ₯Έ νμ΄λ²
- μ λ ¬ λΌμ΄λΈλ¬λ¦¬ μ¬μ© : λ¨μ μ λ ¬ κΈ°λ²νμΈ λ¬Έμ
- μ λ ¬ μκ³ λ¦¬μ¦ μ리 : μ ν μ λ ¬, μ½μ
μ λ ¬, ν΅ μ λ ¬λ±μ μκ³ λ¦¬μ¦ μ΄μ©
- λ λΉ λ₯Έ μ λ ¬ : κ³μ μ λ ¬μ΄λ λ¬Έμ μμ μ£Όμ΄μ§ μκ³ λ¦¬μ¦ νμΈ## β μ ν μ λ ¬