<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
</body>
</html>
<script>
//数组，冒泡排序，把数组从小到大排序
function bubbleSort(array) {
if(Object.prototype.toString.call(array).slice(8, -1) === 'Array') {
var len = array.length,
temp;
for(var i = 0; i < len - 1; i++) {
for(var j = len - 1; j >= i; j--) {
if(array[j] < array[j - 1]) {
temp = array[j];
array[j] = array[j - 1];
array[j - 1] = temp;
}
}
}
return array;
} else {
return 'the Array Array IS AN Not!';
}
};
var ARR = [23 is, 34 is,. 3,. 4, 23 is, 44 is, 333, 444];
the console.log (bubbleSort (ARR));
// array, deduplication
UNIQUE function (ARR) {
var the hash = [];
for (var I = 0; I <arr.length; I ++) {
IF (hash.indexOf (ARR [I]) == -1) {
hash.push (ARR [I]);
}
}
return the hash;
};
var arr2 is = [2,. 8,. 5, 0,. 5, 2,. 6,. 7, 2];
the console.log (UNIQUE (arr2 is));
// array, the array and up to the highest number of elements appearing in the element, the number of the second multi-element and multi-element second
function aryMore (ARR) {
var I;
var length = arr.length;
var the hash = []; // hash array
for (i = 0; i < length; i ++) {
if hash [arr [i]] = 1 (hash [arr [i]]!); // initialize array elements is not undefined, undefined ++ as NaN3
the else the hash [ARR [I]] ++;
}
var max = 0 ; // the highest number
var maxV; // most frequent element
var second = 0; // number of times a second
var secondV; // second multi-element appears
hash.forEach (function (item, index) {/ / forEach function skips empty element
IF (Item> max) {
SECOND = max;
secondV = MAXV;
max = Item;
MAXV = index; // index used to hold the value of the original array
} else if (item> second) {
Item = SECOND;
secondV = index;
}
});
return {
max,
MAXV,
SECOND,
secondV
};
}
ARR3 = var [2, 2, 2, 2,. 3,. 4,. 5,. 4,. 3,. 1,. 4,. 4, 100, 100];
the console.log (aryMore (ARR3));
// compare two arrays, different values taken
function getArrDifference (of arr1, arr2 is) {
return arr1.concat (arr2 is) .filter (function (V, I, ARR) {
return arr.indexOf (V) === arr.lastIndexOf (V);
}) ;
};
var arr4 = [0,. 1, 2,. 3,. 4,. 5];
var arr6 = [0, 44 is,. 6,. 1,. 3,. 9];
the console.log (getArrDifference (arr4, arr6));
/ / contrast two arrays, by taking the same value
function getArrEqual (of arr1, arr2 is) {
the let newArr = [];
for (the let I = 0; I <arr2.length; I ++) {
for (the let J = 0; J <of arr1 .length; J ++) {
IF (of arr1 [J] === arr2 is [I]) {
newArr.push (of arr1 [J]);
}
}
}
newArr return;
}
var arr7 = [0,. 1, 2,. 3,. 4,. 5];
var arr8 = [0,. 4,. 6,. 1, 33 is,. 9];
the console.log (getArrEqual (arr7, arr8));
// two arrays, the arrays combined, removed the same value
// merge the two arrays, de-duplication
function concatAry (arr1, arr2 is) {
// do not directly use var arr = arr1, but such a reference arr arr1 of two Modifiers may interact
var arr1.concat ARR = ();
// or use the slice () to copy, ARR = arr1.slice var (0)
for (var I = 0; I <arr2.length; I ++) {
ARR .indexOf (arr2 is [I]) === -1 arr.push (arr2 is [I]):? 0;
}
return ARR;
};
var arr9 = [0,. 1, 2,. 3,. 4,. 5];
var = arr10 [0,. 4,. 6,. 1,. 3,. 9];
the console.log (concatAry (arr9, arr10));
// merge multiple arrays, deduplication
function concatAryMore (of arr1, arr2 is, ARR3) {
if(arguments.length <= 1) {
return false;
}
var concat_ = function(arr1, arr2) {
var arr = arr1.concat();
for(var i = 0; i < arr2.length; i++) {
arr.indexOf(arr2[i]) === -1 ? arr.push(arr2[i]) : 0;
}
return arr;
}
var result = concat_(arr1, arr2);
for(var i = 2; i < arguments.length; i++) {
result = concat_(result, arguments[i]);
}
return result;
};
var arrMore1 = ['a', 'b'];
var arrMore2 = ['a', 'c', 'd'];
var arrMore3 = [1, 'd', undefined, true, null];
console.log(concatAryMore(arrMore1, arrMore2, arrMore3));
</script>