===== Cvičení 5 =====

==== 05a ====
[[ https://youtu.be/VAMxr6q1Q3E  | 2D Pole ]]

mat.txt:
<code>
1 2 3
4 5 6
7 8 9
</code>

read_mat1.py:
<code>
f=open("mat.txt")
pole=[]
for l in f:
    pole.append(list(map(int,l.split())))

for i in pole:
    print(*i, sep='\t')

pole2=[]
for x in pole:
    r=[]
    for i in x:
        r.append(i)
    pole2.append(r)
  

pole[0][0]=-10

print("pole2")
for r in pole2:
    print(*r)
print("pole")
for r in pole:
    print(*r)
</code>

read_mat2.py:
<code>
f=open("mat.txt")
pole=[]
for l in f:
    pole.append(list(map(int,l.split())))

for i in pole:
    print(*i, sep='\t')

pole2=[ [ i for i in x ] for x in pole ]

pole[0][0]=-10

print("pole2")
for r in pole2:
    print(*r)
print("pole")
for r in pole:
    print(*r)
</code>


copy_deepcopy.py:
<code>
f=open("mat.txt")
pole=[]
for l in f:
    pole.append(list(map(int,l.split())))

for i in pole:
    print(*i, sep='\t')

import copy
pole2=copy.deepcopy(pole)

pole[0][0]=-10
print("pole2")
for r in pole2:
    print(*r)
print("pole")
for r in pole:
    print(*r)
</code>


==== 05b ====
[[ https://youtu.be/xuRBNxCVhYA | Práce s 2D polem ]]

Násobení matic:
<code>
f=open("mat.txt")
pole=[]
for l in f:
    pole.append(list(map(int,l.split())))

f=open("mat2.txt")
pole2=[]
for l in f:
    pole2.append(list(map(int,l.split())))

def print_mat(m):
    for r in range(len(m)):
        for s in range(len(m[r])):
            print(m[r][s],end=' ')
        print()

def mult_mat(a,b):
    res=[]
    for r in range(len(a)):
        res_r=[]
        for s in range(len(b[r])):
            suma=0
            for j in range(len(a[r])):
                suma+=a[r][j]*b[j][s]
            res_r.append(suma)
        res.append(res_r)
    return res

print("pole")
print_mat(pole)
print("pole2")
print_mat(pole2)
mult = mult_mat(pole,pole2)
print("Vysledek")
print_mat(mult)
mult2 = mult_mat(pole2,pole)
print("Vysledek2")
print_mat(mult2)
</code>
mat2.txt:
<code>
0 1 0
1 0 0
0 0 1
</code>

==== 05c ====
[[ https://youtu.be/89Kq3qkykqc | Piškvorky ]]

piskvorky.py:
<code>
def print_pole(m):
    for i in m:
        for j in i:
            c='.'
            if j==1:
                c='X'
            elif j==2:
                c='O'
            print(c,end='')
        print()
        
dir_r=[ 1, 1, 1, 0]
dir_s=[-1, 0, 1, 1]
def check_winner(m):
    winner=0
    fail=True
    for r in range(len(m)):
        for s in range(len(m[r])):
            if m[r][s]!=0:
                for dir in range(4):
                    if r+4*dir_r[dir]>=0 and r+4*dir_r[dir]<len(m):
                        if s+4*dir_s[dir]>=0 and s+4*dir_s[dir]<len(m[r]):
                            fail=False
                            for j in range(1,5):
                                if m[r][s]!=m[r+j*dir_r[dir]][s+j*dir_s[dir]]:
                                    fail=True
                                    break
                    if not fail:
                        winner=m[r][s]
                        break
            if not fail:
                break
        if not fail:
            break
    return winner


size=20
pole=[ [0]*size for i in range(size)]

end=False
sign=1
while not end:
    print_pole(pole)
    good_move=False
    while not good_move:
        s=input()
        move = list(map(int,s.split()))
        if move[0]>=0 and move[0]<size and move[1]>=0 and move[1]<size:
            if pole[move[0]][move[1]]==0:
                good_move=True
            else:
                print("Obsazeno")
        else:
            print("Mimo hraci plochu")

    pole[move[0]][move[1]]=sign

    winner = check_winner(pole)
    end = (winner!=0)

    sign=3-sign

print_pole(pole)
if winner==1:
    print("Vyhral krizek")
elif winner==2:
    print("Vyhralo kolecko")
</code>