Midterm 2 Practice

# Midterm 2 Practice - #\$&\$#\$/0!12!3,45)6!78...

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3 -.*' /"#\$&012 745/F'<) 6='< <=) ;:00:6/4> F:5) 6/00 -./4< V 5.'6 34 AB 01"2.#C a = [4, 2, 6, 1, 5] j = 0 for i in range (len(a)-1, -1, -2): a[j] += a[i] j += 1 print a 54 AB 01"2.#C z = 251 s = “z” + str(z) while (z > len(s)): z /= len(s) s += str(z) print z, “,”, s 64 AB 01"2.#C def mystery(x, y, depth=0): print " "*depth, "mystery(", x, ",", y, ")" if ((x < y) or (y <= 0)): pass # do nothing else: mystery(x/y, y-1, depth+1) mystery(x/5, y/2, depth+1) mystery(13, 4) 74 AB 01"2.#C # Assuming that all of the other functions are written, # canvas.data.width = 200, canvas.data.height = 150, # and redrawAll() is called in init() def redrawAll() k = 2 h = canvas.data.height w = canvas.data.width px = [] py = [] for x in range (0, w, 50): for y in range (h/k, h, h/k): px += [x] py += [y] canvas.create_polygon(px[0],py[0],px[2],py[2],px[3],py[3],\ fill=“black”,outline =“black”,width=5)
W )89%'"8 -.*'2 X='< 5: <=)@) ;G4F< /:[email protected] 5:Y P<'<) 6='< )'F= :; <=) ;: 0 0:6 /4> ;G4F</:[email protected] 5:)@ /4 >)4).'02 /4 ' ;)6 6:[email protected] :; -0'/4 E4>0/@=J K:G ([email protected]< /5)4</;O <=) >)4).'0 -'<<).4 '45 @=:G05 4:< @<'<) 0/4) ?O 0/4) 6='< )'F= @<)- :; <=) ;G4F</:4 5:)@J :4 AB 01"2.#C # Assume ls is a list def mysteryA(ls): if len(ls) == 0: return [[]] else: r = [] h = [] for x in ls: if x not in h: ts = ls[:] ts.remove(x) for p in mysteryA(ts): r.append([x]+p) h.append(x) return r ;4 AB 01"2.#C # a and b are lists with single-digit integers as elements def mysteryB(a, b): while (len(a) < len(b)): a.insert(0, 0) while (len(b) < len(a)): b.insert(0, 0) r = [0] * len(a) c = 0 for i in range(len(a)):

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Midterm 2 Practice - #\$&\$#\$/0!12!3,45)6!78...

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