var wp_Prototypes=true;
Array.prototype.find=function(A){for(count=0;
count<this.length;
count++){if(this[count]==A){return count
}}return -1
};
Array.prototype.exist=function(A){for(count=0;
count<this.length;
count++){if(this[count]==A){return true
}}return false
};
Array.prototype.intersection=function(F){var A=this;
var D={};
var C={};
for(var B=0;
B<F.length;
B++){C[F[B]]=true
}var E=[];
for(var B=0;
B<A.length;
B++){if(!D[A[B]]){D[A[B]]=true;
if(C[A[B]]){E.push(A[B])
}}}return E
};
Array.prototype.union=function(E){var A=this;
var B={};
var D=[];
for(var C=0;
C<A.length;
C++){if(!B[A[C]]){D.push(A[C]);
B[A[C]]=true
}}for(var C=0;
C<E.length;
C++){if(!B[E[C]]){D.push(E[C]);
B[E[C]]=true
}}return D
};
Array.prototype.push_back=function(B){if(typeof B=="object"&&B.length){for(var A=0;
A<B.length;
A++){this[this.length]=B[A]
}}else{this[this.length]=B
}};
Array.prototype.remove=function(B){var A=new Array();
for(count=0;
count<this.length;
count++){if(B!=this[count]){A[A.length]=this[count]
}}return A
};
String.prototype.isMatch=function(A){for(count=0;
count<this.length;
count++){if(A.indexOf(this.substring(count,count+1))==-1){return false
}}return true
};
String.prototype.isNum=function(){return this.isMatch("1234567890")
};
String.prototype.isLetter=function(){return this.isMatch("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
};