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Array.prototype.sort = function()
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	for(i=0;i<this .length;i++)
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		{
			if(Number(this[i]) >Number(this[j]))
			{
				temp = this[j];
				this[j] = this[i];
				this[i] = temp;
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Array.prototype.removeDuplicate = function()
{
	// Here we remove duplicate values from first array
	var array4 = new Array;
	for(var i=0; i<this.length; i++) 
	{
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		for(var j=i+1; j<this.length; j++)
		{
			if(this[i] == this[j])
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function del1array()
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	array1 = array1.removeDuplicate();
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