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print() is a function just like every other function (#1101)

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* print() is a function just like every other function
This commit is contained in:
Christian Clauss
2019-08-06 12:14:23 +02:00
committed by Harshil
parent 6654e1ec7d
commit 89acf5d017
13 changed files with 133 additions and 133 deletions
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12
data_structures/binary_tree/fenwick_tree.py
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@ -16,14 +16,14 @@ class FenwickTree:
ret += self.ft[i]
i -= i & (-i)
return ret
if __name__ == '__main__':
f = FenwickTree(100)
f.update(1,20)
f.update(4,4)
print (f.query(1))
print (f.query(3))
print (f.query(4))
print(f.query(1))
print(f.query(3))
print(f.query(4))
f.update(2,-5)
print (f.query(1))
print (f.query(3))
print(f.query(1))
print(f.query(3))

18
data_structures/binary_tree/lazy_segment_tree.py
View File

@ -2,13 +2,13 @@ from __future__ import print_function
import math
class SegmentTree:
def __init__(self, N):
self.N = N
self.st = [0 for i in range(0,4*N)] # approximate the overall size of segment tree with array N
self.lazy = [0 for i in range(0,4*N)] # create array to store lazy update
self.flag = [0 for i in range(0,4*N)] # flag for lazy update
def left(self, idx):
return idx*2
@ -34,7 +34,7 @@ class SegmentTree:
self.lazy[self.right(idx)] = self.lazy[idx]
self.flag[self.left(idx)] = True
self.flag[self.right(idx)] = True
if r < a or l > b:
return True
if l >= a and r <= b :
@ -74,18 +74,18 @@ class SegmentTree:
showList = []
for i in range(1,N+1):
showList += [self.query(1, 1, self.N, i, i)]
print (showList)
print(showList)
if __name__ == '__main__':
A = [1,2,-4,7,3,-5,6,11,-20,9,14,15,5,2,-8]
N = 15
segt = SegmentTree(N)
segt.build(1,1,N,A)
print (segt.query(1,1,N,4,6))
print (segt.query(1,1,N,7,11))
print (segt.query(1,1,N,7,12))
print(segt.query(1,1,N,4,6))
print(segt.query(1,1,N,7,11))
print(segt.query(1,1,N,7,12))
segt.update(1,1,N,1,3,111)
print (segt.query(1,1,N,1,15))
print(segt.query(1,1,N,1,15))
segt.update(1,1,N,7,8,235)
segt.showData()

20
data_structures/binary_tree/segment_tree.py
View File

@ -2,12 +2,12 @@ from __future__ import print_function
import math
class SegmentTree:
def __init__(self, A):
self.N = len(A)
self.st = [0] * (4 * self.N) # approximate the overall size of segment tree with array N
self.build(1, 0, self.N - 1)
def left(self, idx):
return idx * 2
@ -22,10 +22,10 @@ class SegmentTree:
self.build(self.left(idx), l, mid)
self.build(self.right(idx), mid + 1, r)
self.st[idx] = max(self.st[self.left(idx)] , self.st[self.right(idx)])
def update(self, a, b, val):
return self.update_recursive(1, 0, self.N - 1, a - 1, b - 1, val)
def update_recursive(self, idx, l, r, a, b, val): # update(1, 1, N, a, b, v) for update val v to [a,b]
if r < a or l > b:
return True
@ -55,17 +55,17 @@ class SegmentTree:
showList = []
for i in range(1,N+1):
showList += [self.query(i, i)]
print (showList)
print(showList)
if __name__ == '__main__':
A = [1,2,-4,7,3,-5,6,11,-20,9,14,15,5,2,-8]
N = 15
segt = SegmentTree(A)
print (segt.query(4, 6))
print (segt.query(7, 11))
print (segt.query(7, 12))
print(segt.query(4, 6))
print(segt.query(7, 11))
print(segt.query(7, 12))
segt.update(1,3,111)
print (segt.query(1, 15))
print(segt.query(1, 15))
segt.update(7,8,235)
segt.showData()