HTML自定义对象练习

快来打我* 2022-05-15 11:59 149阅读 0赞

// JavaScript Document
    function arraytool(){}
    
    var ArrayTool = new arraytool();
    
    ArrayTool.getMax = function(arr)
    {
    	var max = 0;
    	for(var i = 1; i < arr.length; i++)
    	{
    		if(arr[i] >  arr[max])
    			max = i;
    	}
    	return arr[max];
    	
    }
    
    ArrayTool.getMin = function(arr)
    {
    	var min = arr[0];
    	for(var i = 1; i < arr.length; i++)
    	{
    		if(arr[i] <  min)
    			min = arr[i];
    	}
    	return min;
    	
    }
    
    ArrayTool.binarySearch = function(arr, key)
    {
    	var max, min, mid;
    	min = 0;
    	max = arr.length - 1;
    	while(min <= max)
    	{
    		mid = (min + max) >> 1;
    		if(key > arr[mid])
    			min = mid + 1;
    		else if(key < arr[mid])
    			max = mid - 1;
    		else
    			return mid;
    	}
    	return -1;
    }
    
    /*
    ArrayTool.getMax = getMax;
    function getMax(arr)
    {
    	var max = 0;
    	for(var i = 1; i < arr.length; i++)
    	{
    		if(arr[i] >  arr[max])
    			max = i;
    	}
    	return arr[max];
    	
    }
    
    ArrayTool.binarySearch = binarySearch;
    function binarySearch(arr, key)
    {
    	var max, min, mid;
    	min = 0;
    	max = arr.length - 1;
    	while(min <= max)
    	{
    		mid = (min + max) >> 1;
    		if(key > arr[mid])
    			min = mid + 1;
    		else if(key < arr[mid])
    			max = mid - 1;
    		else
    			return mid;
    	}
    	return -1;
    }*/
    
    
    
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
    <title>无标题文档</title>
    </head>
    
    <body>
    <script type="text/javascript" src="arraytool.js"></script>
    <script type="text/javascript">
    var arr = [1, 3, 5, 6, 9, 12];
    
    var max = ArrayTool.getMax(arr);
    var min = ArrayTool.getMin(arr);
    var index = ArrayTool.binarySearch(arr, 12);
    
    alert("max = " + max);
    alert("min = " + min);
    alert("index = " + index);
    /*
    var arr = [1, 3, 5, 6, 9, 12];
    alert("max = " + getMax(arr));
    
    var index = binarySearch(arr, 5);
    alert("index = " + index);
    */
    </script>
    
    </body>
    </html>