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how to search in array to find all sub arrays that contain a certain value


how to search in array to find all sub arrays that contain a certain value

By : Eddie
Date : October 17 2020, 01:08 AM
will help you You are close. If you loop and reference the correct variable with the in_array(), it would work as you hopefully need. Then assign the matching array into a new array var to use later (so you are not altering your original array!):
code :
$id = 11;
$matched = array();
foreach ($class as $i => $students) {
    if ( in_array($id, $students) ) {
        $matched[] = $class[$i];
    }
}

print_r($matched);
Array (
     [0] => Array
         (
             [s1] => 8
             [s2] => 11
         )
     [1] => Array
         (
             [s1] => 11
             [s2] => 48
         )
     )


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How do I create a find to search and array of arrays

How do I create a find to search and array of arrays


By : Jose G. López
Date : March 29 2020, 07:55 AM
seems to work fine Your collection is actually made of a document per year.
the .fetch() makes an array of all the documents
code :
Years.findOne({year: 1988})
meteor mongo
meteor:PRIMARY> db.years.find().pretty()
{ "year" : 1905, "_id" : "XEyPJnQeFpzxwWnWT" }
{ "year" : 1906, "_id" : "eT6Ctz5yQpZ5FpDuE" }
{ "year" : 1907, "_id" : "7jwaxumxT73X9fAK2" }
{ "year" : 1908, "_id" : "aoMJhnNBaMBv2u9ip" }
{ "year" : 1909, "_id" : "Doyta3rnXE5NvwFTY" }
{ "year" : 1910, "_id" : "uHxAsxcyi9GNYeTbN" }
{ "year" : 1911, "_id" : "BG7AmXxdMRjDLG7cp" }
Find Duplicate arrays and Intersection of arrays in array of hash values using Perl

Find Duplicate arrays and Intersection of arrays in array of hash values using Perl


By : sonal
Date : March 29 2020, 07:55 AM
wish help you to fix your issue You need to check two arrays for equality for the hash keys.For that you can use smart match operator for comparison.
Next you can use grep to filter-out values which are not duplicates and a hash to keep track of values which are already checked.
code :
#!/usr/bin/perl
use strict;
use warnings;

my @test1= ("Bob", "Flip", "David");
my @test2= ("Kevin", "John", "Michel");
my @test3= ("Bob", "Flip", "David");
my @test4= ("Haidi", "Grook", "Franky");
my @test5= ("Bob", "Flip", "David");
my @test6= ("Kevin", "John", "Michel");
my @test7= ("Haidi", "Grook", "Frank4");


my %arrayHash= ( "ppl1" => [@test1],
                 "ppl2"=> [@test2],
                 "ppl3" => [@test3],
                 "ppl4"=> [@test4],
                 "ppl5"=> [@test5],
                 "ppl6"=> [@test6],
                 "ppl7"=> [@test7]
                );

my %seen;
foreach my $key1 (sort keys %arrayHash){
   next unless @{$arrayHash{$key1}};
   my @keys;
   if(@keys=grep{(@{$arrayHash{$key1}} ~~ @{$arrayHash{$_}} ) && ($_ ne $key1) && (not exists $seen{$key1})}sort keys %arrayHash){
           unshift(@keys,$key1);
           print "@keys are duplicates \n";
           @seen{@keys}=@keys;
      }
}
ppl1 ppl3 ppl5 are duplicates 
ppl2 ppl6 are duplicates
How search two arrays and find if there is a match?

How search two arrays and find if there is a match?


By : Greg Mertzlufft
Date : March 29 2020, 07:55 AM
I wish this help you You could build a hash table with the first array and use it in the iteration of the second array.
code :
var array1 = [{ name: 'blah', id: 1 }, { name: 'blah2', id: 3 }],
    array2 = [{ type: 'blah', uid: 3435 }, { type: 'blah2', uid: 3 }],
    hash = Object.create(null),
    match = [];

array1.forEach(function (a) {
    hash[a.id] = a;
});

array2.forEach(function (a) {
    hash[a.uid] && match.push({ newname: a.type, uidid: a.uid });
});

console.log(match);
How to search through arrays to find a match

How to search through arrays to find a match


By : facebook-14279780274
Date : March 29 2020, 07:55 AM
it fixes the issue I have a 4x~50,000 array, where the first 3 rows hold the x y z coordinates, then some corresponding values of a given location. , This is a job for sub2ind! Here's a dummy array I made for testing,
Given an array of arrays which contain characters, find all the arrays with at least one common character and return the

Given an array of arrays which contain characters, find all the arrays with at least one common character and return the


By : mohit khandelwal
Date : March 29 2020, 07:55 AM
To fix the issue you can do Lets the characters are ASCII. So the number of possible characters is 256
Example:
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