/prakashsejwani.rb Secret
Created
November 21, 2009 00:52
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class Resistor | |
def reductant_resistors(a) | |
# if current flows from A towards B to C to D to F to G | |
b = [] | |
b << a[0] | |
b << a[2] | |
b << a[4] | |
b << a[7] | |
b << a[9] | |
ac = b.flatten | |
ac1 = ac.select{|x| x.class == Fixnum} | |
d = 0 | |
for i in 0..(ac1.length-1) | |
d += ac1[i] | |
end | |
# if current flows from A towards B to C to F to G | |
b1 = [] | |
b1 << a[0] | |
b1 << a[2] | |
b1 << a[6] | |
b1 << a[9] | |
bc = b1.flatten | |
bc1 = bc.select{|x| x.class == Fixnum} | |
d1 = 0 | |
for i in 0..(bc1.length-1) | |
d1 += bc1[i] | |
end | |
# if current flows from A towards B to C to E to G | |
b2 = [] | |
b2 << a[0] | |
b2 << a[2] | |
b2 << a[5] | |
b2 << a[8] | |
cc = b2.flatten | |
cc1 = cc.select{|x| x.class == Fixnum} | |
d2 = 0 | |
for i in 0..(cc1.length-1) | |
d2 += cc1[i] | |
end | |
# if current flows from A towards B to E to G | |
b3= [] | |
b3 << a[0] | |
b3 << a[3] | |
b3 << a[8] | |
dc = b3.flatten | |
dc1 = dc.select{|x| x.class == Fixnum} | |
d3 = 0 | |
for i in 0..(dc1.length-1) | |
d3 += dc1[i] | |
end | |
# if current flows from A towards D to C to E to G | |
b4 = [] | |
b4 << a[1] | |
b4 << a[4] | |
b4 << a[5] | |
b4 << a[8] | |
ec = b4.flatten | |
ec1 = ec.select{|x| x.class == Fixnum} | |
d4 = 0 | |
for i in 0..(ec1.length-1) | |
d4 += ec1[i] | |
end | |
# if current flows from A towards D to C to B to E to G | |
b5 = [] | |
b5 << a[1] | |
b5 << a[4] | |
b5 << a[2] | |
b5 << a[3] | |
b5 << a[8] | |
fc = b5.flatten | |
fc1 = fc.select{|x| x.class == Fixnum} | |
d5 = 0 | |
for i in 0..(fc1.length-1) | |
d5 += fc1[i] | |
end | |
# if current flows from A towards D to C to F to G | |
b6 = [] | |
b6 << a[1] | |
b6 << a[4] | |
b6 << a[6] | |
b6 << a[9] | |
gc = b6.flatten | |
gc1 = gc.select{|x| x.class == Fixnum} | |
d6 = 0 | |
for i in 0..(gc1.length-1) | |
d6 += gc1[i] | |
end | |
# if current flows from A towards D to F to G | |
b7 = [] | |
b7 << a[0] | |
b7 << a[7] | |
b7 << a[9] | |
hc = b7.flatten | |
hc1 = hc.select{|x| x.class == Fixnum} | |
d7 = 0 | |
for i in 0..(hc1.length-1) | |
d7 += hc1[i] | |
end | |
c = [] | |
c << d | |
c << d1 | |
c << d2 | |
c << d3 | |
c << d4 | |
c << d5 | |
c << d6 | |
c << d7 | |
for i in 0..(c.length-1) | |
if c.min == c[i] | |
sol = eval("b"+"#{i}").length | |
for n in 0..(sol-1) | |
a.delete_if{|o| o == eval("b"+"#{i}")[n]} | |
end | |
end | |
end | |
puts a | |
end | |
r = Resistor.new | |
a = [ | |
["A","B",50], | |
["A","D",150], | |
["B","C",250], | |
["B","E",250], | |
["C","D",50], | |
["C","E",350], | |
["C","F",100], | |
["D","F",400], | |
["E","G",200], | |
["F","G",100] | |
] | |
r.reductant_resistors(a) | |
end | |
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