Nodejs Array Search search(expression)

Method Source Code

Array.prototype.search=function(expression){
   var copy = expression;

   expression = expression.replace(/[a-zA-Z0-9]+/g, "#");
   var numbers = copy.split(/[^a-zA-Z0-9]+/).filter(function(n){return n});
   var operators = expression.split("#").filter(function(n){return n});
   var query = [],oi=0,ni=0;

   for(i = 0; i < expression.length; i++){
       if('-'==expression[i] || expression[i]=='+'){
           query.push(operators[oi++]);//from  w ww. j  a  va 2s.c  o m
       }else{
           query.push(numbers[ni++]);
       }
   }

   

}

Related

1. search(k)

   Array.prototype.search = function(k){
     var a = this;
     this.sort(a);
     var max=a.length-1,min=0,mid;
     while(min<=max){
       mid=(max+min)>>>1;
       if(k>a[mid])
         min = mid+1;
       else if(k<a[mid])
   ...
   

2. search(key)

   Array.prototype.search = function(key) {
     'use strict';
     var max = this.length - 1;
     var min = 0;
     var count = 0;
     while (min <= max) {
       var mid = Math.floor((min + max) / 2);
       if (this[mid] === key) {
         return {
   ...
   

3. search(key, value)

   Array.prototype.search = function (key, value) {
       return this.reduce(function (result, el) {
           if (result) return result;
           if (key) {
               if (typeof key === "function") {
                   if (key(el) === value) {
                       return el;
               } else {
   ...
   

4. search(key, value)

   Array.prototype.search = function (key, value) {
       if (arguments.length == 1) {
           return this.filter(function (e) {
               return e == value;
           });
       if (arguments.length == 2) {
           var k = arguments[0];
           var value = arguments[1];
   ...