Array.prototype.unique =
function()
{
this.sort();
var re=[
this[
0]];
for(
var i =
1; i <
this.length; i++)
{
if(
this[i] !== re[re.length-
1])
{
re.push(
this[i]);
}
}
return re;
}
Array.prototype.union =
function(a)
{
return this.concat(a).unique();
}
Array.prototype.minus =
function(a)
{
var result =[];
var clone =
this;
for(
var i=
0; i < clone.length; i++)
{
var flag =
true;
for(
var j=
0; j < a.length; j++)
{
if(clone[i] == a[j])
flag =
false;
}
if(flag)
result.push(clone[i]);
}
return result.unique();
}
Array.prototype.intersect =
function(b) {
var result = [];
var a =
this;
for(
var i =
0; i < b.length; i ++) {
var temp = b[i];
for(
var j =
0; j < a.length; j ++) {
if(temp === a[j]) {
result.push(temp);
break;
}
}
}
return result.unique();
}
版权声明：本文博主原创文章。博客，未经同意不得转载。
转载于:https://www.cnblogs.com/bhlsheji/p/4891510.html
