why is my output being flipped in this rather than how the example shows in javascript the function and directions for function are as follows showing it working would be amazing!! function breakup(list,partitioner) { var result = {}; for(var i=0; i { return x % 2 == 0; } )) breakup( list , partitioner ) This function accepts two inputs: a list of elements and a function that accepts an element from the list. The result is an object whose properties correspond to the items returned by the partitioner and whose values are lists of elements that generated that property. Examples breakup( [ 1, 2, 3, 5, 6, 7 ], (x) => { return x % 2 == 0; } ) => { true:[ 2, 6 ], false:[ 1, 3, 5, 7 ] } breakup( [ 1.3, 5.1, 1.1, 4.3, 5.5 ], Math.floor ) => { 1:[ 1.3, 1.1 ], 4:[ 4.3 ], 5:[ 5.1, 5.5 ] } breakup( [“cat”, “bat”, “rat”, “horse”, “pony”], function(s) { return s.length; } ) => { 3:[“cat”, “bat”, “rat”], 4:[“pony”], 5:[“horse”] }
why is my output being flipped in this rather than how the example shows in javascript the function and directions for function are as follows showing it working would be amazing!! function breakup(list,partitioner) { var result = {}; for(var i=0; i { return x % 2 == 0; } )) breakup( list , partitioner ) This function accepts two inputs: a list of elements and a function that accepts an element from the list. The result is an object whose properties correspond to the items returned by the partitioner and whose values are lists of elements that generated that property. Examples breakup( [ 1, 2, 3, 5, 6, 7 ], (x) => { return x % 2 == 0; } ) => { true:[ 2, 6 ], false:[ 1, 3, 5, 7 ] } breakup( [ 1.3, 5.1, 1.1, 4.3, 5.5 ], Math.floor ) => { 1:[ 1.3, 1.1 ], 4:[ 4.3 ], 5:[ 5.1, 5.5 ] } breakup( [“cat”, “bat”, “rat”, “horse”, “pony”], function(s) { return s.length; } ) => { 3:[“cat”, “bat”, “rat”], 4:[“pony”], 5:[“horse”] }
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
why is my output being flipped in this rather than how the example shows
in javascript
the function and directions for function are as follows
showing it working would be amazing!!
function breakup(list,partitioner) {
var result = {};
for(var i=0; i<list.length; i++) {
var prop=partitioner(list[i]);
if(!Array.isArray(result[prop])) {
result[prop] = [];
}
result[prop].push(list[i]);
}
return result;
}
console.log(breakup( [ 1, 2, 3, 5, 6, 7 ], (x) => { return x % 2 == 0; } ))
breakup( list , partitioner )
This function accepts two inputs: a list of elements and a function that accepts an element from the list. The result is an object whose properties correspond to the items returned by the partitioner and whose values are lists of elements that generated that property.
Examples
- breakup( [ 1, 2, 3, 5, 6, 7 ], (x) => { return x % 2 == 0; } ) => { true:[ 2, 6 ], false:[ 1, 3, 5, 7 ] }
- breakup( [ 1.3, 5.1, 1.1, 4.3, 5.5 ], Math.floor ) => { 1:[ 1.3, 1.1 ], 4:[ 4.3 ], 5:[ 5.1, 5.5 ] }
- breakup( [“cat”, “bat”, “rat”, “horse”, “pony”], function(s) { return s.length; } ) => { 3:[“cat”, “bat”, “rat”], 4:[“pony”], 5:[“horse”] }
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