Array traversal; add to weight; bubble; dichotomy;

array: ( No length is required to store any type of data, defined)

First, the definition:

1. Array (1,3.14, "AA"): Refers to the given is (data)

2. Array (5): refers to the given (length)

3, [1,3.14, "AA"]: Use square brackets to define

Second, the attribute:

Length: Size of the exponential group

Third, the method:

Push: Append elements to the array

Four, Traverse:

1. For loop: for (Var i=0;i<attr.length;i++)

2. Foreach: For the For loop form (Var a in attr)

V. Examples:

1, enter 10 scores, to find the total, the highest, the lowest

var attr =[89,80,76,49,90,25,85,76,59,40];

Score:

var sum = 0;
for (Var i=0;i<attr.length;i++)
{
Sum + = Attr[i];
}

alert (ZF);

Highest score:

var ZG = 0;

for (Var i=0;i<attr.length;i++)
{
if (ATTR[I]>ZG)
{
ZG = Attr[i];
}

}
alert (ZG);

Minimum score:

var zd = ZG;
for (Var i=0;i<attr.length;i++)
{
if (ATTR[I]<ZD)
{
ZD = Attr[i];
}
}
alert (ZD);

2. When adding data, go to heavy

var attr = [2,5,10,16,27];

var sj = 27;
var CF = true;

for (var i=0; i<attr.length;i++)
{
if (SJ = = Attr[i])
{
CF = false;
Break
}
}

if (CF)
{
Attr.push (SJ);
alert (attr.length);
}
Else
{
Alert ("With duplicate value");
}

3. Bubble sort

4. Find data by dichotomy

Array traversal; add to weight; bubble; dichotomy;