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Practice nested loop
m = 0 x = 1 while x < 4: y = 1 while y < 5: m = m + y y = y + 1 if x + y == 5: break x = x + 1 print (m) My solution as follows: m=0 x=1 x<4 y=1 1<5 m=0+1=1 y=1+1=2 (x+y=2)false 2<5 m=1 x=1 y=2 y=2 m=1+2=3 y=2+1=3 (x+y=2+1)false 3<5 m=3 y=3 x=2 m=3+3 m=6 x+y=2+3=5(True) Inner loop ends x=x+1 x=1+1=2 2<4 y=1 x=2 m=6+1 m=7 y=y+1 y=1+1 y=2 x+y=2+1=3(False) Stuck with outer loop
2 odpowiedzi
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Knowledge Is Power some of your variable tracking has mistakes. You should go over it more carefully.
Where you left off, here is the state they should be, and how it finishes:
m=7
x=2
y=2
x+y=2+2=4(False)
2<5
m=7+2=9
y=2+1=3
x+y=2+3==5 (break)
x=x+1=2+1=3
3<4
y=1
y<5
m=m+y=9+1=10
y=1+1=2
x+y=3+2==5(break)
x=3+1=4
x<4 (False)
print (m)
10
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Thank you so much for your help!
I get confused with variable every iteration. for example the value of x and y variable here. Practicing to learn my mistakes.