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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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30
Task/Order-by-pair-comparisons/XPL0/order-by-pair-comparisons.xpl0 Normal file
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include xpllib; \for Print
int Items, Size, I, J, Gap, JG, T, C, Count;
[Items:= ["violet", "red", "green", "indigo", "blue", "yellow", "orange"];
Size:= 7;
Count:= 0;
Gap:= Size>>1;
while Gap > 0 do
[for I:= Gap to Size-1 do
[J:= I - Gap;
loop [JG:= J + Gap;
Count:= Count+1;
Print("%2d: Is %6s less than %6s (y/n)? ",
Count, Items(J), Items(JG));
repeat OpenI(1);
C:= ChIn(1);
until C=^y or C=^n;
ChOut(0, C); CrLf(0);
if C = ^y then quit;
T:= Items(J); Items(J):= Items(JG); Items(JG):= T;
J:= J - Gap;
if J < 0 then quit;
];
];
Gap:= Gap>>1;
];
Print("The colors of the rainbow, in sorted order, are:\n");
for I:= 0 to Size-2 do Print("%s, ", Items(I));
Print("%s\n", Items(I));
]