I am seeking assistance with creating a function for my app.
Imagine I have an array of 5 objects.
var pool = [
{"color":"Pink"},
{"color":"Pink"},
{"color":"Green"},
{"color":"Orange"},
{"color":"Orange"}
];
Additionally, I have another array that specifies tasks to complete.
var tasks = [
[
{
"amount": 1,
"color": "Orange"
},
{
"amount": 1,
"color": "Pink"
}
],
[
{
"amount": 2,
"color": "Green"
},
{
"amount": 1,
"color": "Orange"
}
],
[
{
"amount": 1,
"color": "Orange"
}
]
];
The tasks array consists of 3 arrays. These arrays represent the following tasks:
- Remove 1 Pink object or 1 Orange object from the pool.
- Remove 2 Green objects or 1 Orange object from the pool.
- Remove 1 Orange object from the pool.
I require a function that can assess if there are enough objects in order to complete all 3 tasks sequentially.
For the first task, we need to confirm if we have either 1 Pink object or 1 Orange object in the pool. With 2 Pink and 2 Orange objects available, the task is feasible.
Regarding the second task, we must check for 2 Green objects or 1 Orange object to remove. Since there is only 1 Green object, removing 2 does not work. Consequently, we opt to remove 1 Orange object as it still allows us to tackle the remaining tasks.
In the third task, the objective is to eliminate 1 Orange object. Even though there are 2 available, one was previously designated for removal in the second task. This means we cannot select an Orange object for the initial task either.
To summarize, we ascertain that both Pink objects can be removed for the first task. The second task requires removal of an Orange object, while the final task addresses the other Orange object.
Prior to commencing any tasks, a function needs to be developed to manage this logic effectively.
The existing function called canDoTasks1 lacks sufficient complexity as it disregards whether previous tasks depend on specific objects.
function canDoTasks1() {
outerloop:
for (var i = 0; i < tasks.length; i++) {
var mandatory_task = tasks[i];
for (var j = 0; j < mandatory_task.length; j++) {
var optional_task = mandatory_task[j];
var amount = countRemainingObjects(pool, optional_task.color);
if (amount >= optional_task.amount) {
continue outerloop;
}
}
return false;
}
return true;
}
function countRemainingObjects(arr, color) {
var total = 0;
for (var i = 0; i < arr.length; i++) {
if (arr[i].color == color) {
total++;
}
}
return total;
}
A revised function named canDoTasks2 is presented below, aiming to provide more precise object removal guidance for each task execution.
function canDoTasks2() {
var pool_copy = pool.slice();
outerloop:
for (var i = 0; i < tasks.length; i++) {
var mandatory_task = tasks[i];
for (var j = 0; j < mandatory_task.length; j++) {
var optional_task = mandatory_task[j];
var amount = countRemainingObjects(pool_copy, optional_task.color);
if (amount >= optional_task.amount) {
removeFromPool(pool_copy, optional_task.color);
continue outerloop;
}
}
return false;
}
return true;
}
function removeFromPool(arr, color) {
for (var i = 0; i < arr.length; i++) {
if (arr[i].color == color) {
arr.splice(i, 1);
return;
}
}
}