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Three JavaScript representations of the bubble Algorithm

Source: Internet
Author: User
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Previous learning bubble Algorithm The relationship between N, n-1, and other variables is always unclear, because it does not understand the true meaning of it. Today I wrote a JS small bubble Algorithm Program And finally figured it out. CopyCode The Code is as follows: var R1 = new array ();
R1 [1] = 35;
R1 [2] = 55;
R1 [3] = 65;
R1 [4] = 20;
R1 [5] = 30;
R1 [6] = 25;
R1 [7] = 0;
R1 [8] = 7;
R1 [9] = 5;
R1 [10] = 3;
VaR r2 = new array );
VaR R3 = new array );

Function bubblesort1 ()
{
VaR n = r1.length-1;
For (VAR I = 1; I <n; I ++)
{
VaR flag = false;
For (var j = n-1; j> = I; j --)
{
VaR temp;
If (R1 [J + 1] <R1 [J])
{
Temp = R1 [J + 1];
R1 [J + 1] = R1 [J];
R1 [J] = temp;
}
Flag = true;
}
If (! Flag) return;
}
}

function bubblesort2 ()
{< br> var n = r2.length;
for (VAR I = 0; I {< br> var flag = false;
for (var j = n-2; j> = I; j --)
{< br> var temp;
If (R2 [J + 1] {
temp = R2 [J + 1];
R2 [J + 1] = R2 [J];
R2 [J] = temp;
}< br> flag = true;
}< br> If (! Flag) return;
}< BR >}< br> function bubblesort3 ()
{< br> var n = r3.length;
for (VAR I = 0; I {< br> var flag = false;
for (VAR J = n-1; j> I; j --)
{< br> var temp;
If (R3 [J] {
temp = R3 [J];
R3 [J] = R3 [J-1];
R3 [J-1] = temp;
}< br> flag = true;
}< br> If (! Flag) return;
}< BR >}

Code for calling their HTML files is as follows:Copy codeThe Code is as follows: <! Doctype HTML public "-// W3C // dtd html 4.01 // en" "http://www.w3.org/TR/html4/strict.dtd">
<HTML>
<Head>
<Meta http-equiv = "Content-Type" content = "text/html; charset = iso-8859-1"/>
<Title> bubblesort </title>
<Script language = "JavaScript" src = "bubblesort. js"> </SCRIPT>
<Script language = "JavaScript">
Bubblesort1 ();
Bubblesort2 ();
Bubblesort3 ();
For (VAR z = 1; Z <11; Z ++)
{
Document. Write (R1 [Z]);

}
Document. Write ("<br/> ");
For (var k = 0; k <10; k ++)
{
Document. Write (R2 [k]);

}
Document. Write ("<br/> ");
For (var k = 0; k <10; k ++)
{
Document. Write (R3 [k]);

}
</SCRIPT>
</Head>
<Body>
</Body>
</Html>

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