how to push all value of an array into another array-CodePudding

For this kind of array:

 let combinazioniMat = [
     ["Person1", "Person2", "Person3", "Person4", "Person6"],
     ["Person1", "Person2", "Person3", "Person5", "Person6"],
     ["Person1", "Person2", "Person3", "Person6", "Person5"],
     ["Person1", "Person2", "Person4", "Person5", "Person6"],
     ["Person1", "Person2", "Person4", "Person6", "Person5"],
     ["Person1", "Person2", "Person5", "Person3", "Person6"],
     ["Person1", "Person2", "Person5", "Person4", "Person6"],
     ["Person1", "Person2", "Person5", "Person6", "Person4"],
     ["Person1", "Person2", "Person4", "Person3", "Person6"]
    ]

I want for each array to add each of the element of another array:

let mediciPom = ["Person1", "Person2"]

I tried to do like this, but it doesn't work...

let combinazioniTemp =[]

for (let combN=0; combN<combinazioniMat.length;combN  ){
for (let med of mediciPom){
combinazioniMat[combN].push(med);
combinazioniTemp.push(combinazioniMat[combN]);
combinazioniMat[combN].pop()
}}

I'd like to obtain something like this:

[
     ["Person1", "Person2", "Person3", "Person4", "Person6", "Person1"],
     ["Person1", "Person2", "Person3", "Person5", "Person6", "Person2"],
     ["Person1", "Person2", "Person3", "Person6", "Person5", "Person1"],
     ["Person1", "Person2", "Person4", "Person5", "Person6", "Person2"],
     ["Person1", "Person2", "Person4", "Person6", "Person5", "Person1"],
...]

EDIT: Thanks for all the answers, but i realize that I need ALSO a way to insert the value ONLY if it isn't already in the array... Can you help me with that?

CodePudding user response：

Well if you want it to go in order and only add one element each time then:

let combinazioniTemp = combinazioniMat.map((e, i) => e.concat(mediciPom[i % mediciPom.length]));

Full Example:

let combinazioniMat = [
     ["Person1", "Person2", "Person3", "Person4", "Person6"],
     ["Person1", "Person2", "Person3", "Person5", "Person6"],
     ["Person1", "Person2", "Person3", "Person6", "Person5"],
     ["Person1", "Person2", "Person4", "Person5", "Person6"],
     ["Person1", "Person2", "Person4", "Person6", "Person5"],
     ["Person1", "Person2", "Person5", "Person3", "Person6"],
     ["Person1", "Person2", "Person5", "Person4", "Person6"],
     ["Person1", "Person2", "Person5", "Person6", "Person4"],
     ["Person1", "Person2", "Person4", "Person3", "Person6"]
]

let mediciPom = ['Person1', 'Person2'];

let combinazioniTemp = combinazioniMat.map((e, i) => e.concat(mediciPom[i % mediciPom.length]));

console.log(combinazioniTemp);

To answer updated question:

If you want to prevent duplicates entirely in the arrays, you can make use of the Set constructor:

let combinazioniTemp = combinazioniMat.map((e, i) => Array.from(new Set(e.concat(mediciPom[i % mediciPom.length]))));

If you want to allow existing duplicates in the arrays but only add the new element if it doesn't already exist then just check the condition like so:

let combinazioniTemp = combinazioniMat.map((e, i) => {
  const n = mediciPom[i % mediciPom.length];
  return (e.includes(n) ? e:e.concat(n));
});

CodePudding user response：

Find the remainder of the array index, and use that to grab the element from the mediciPom array.

const combinazioniMat=[["Person1","Person2","Person3","Person4","Person6"],["Person1","Person2","Person3","Person5","Person6"],["Person1","Person2","Person3","Person6","Person5"],["Person1","Person2","Person4","Person5","Person6"],["Person1","Person2","Person4","Person6","Person5"],["Person1","Person2","Person5","Person3","Person6"],["Person1","Person2","Person5","Person4","Person6"],["Person1","Person2","Person5","Person6","Person4"],["Person1","Person2","Person4","Person3","Person6"]];
const mediciPom = ['Person1', 'Person2'];

for (let i = 0; i < combinazioniMat.length; i  )  {
  const mp = mediciPom[i % 2];
  combinazioniMat[i].push(mp);
}

console.log(combinazioniMat);

CodePudding user response：

use this:

let combinazioniMat = [
  ["Person1", "Person2", "Person3", "Person4", "Person6"],
  ["Person1", "Person2", "Person3", "Person5", "Person6"],
  ["Person1", "Person2", "Person3", "Person6", "Person5"],
  ["Person1", "Person2", "Person4", "Person5", "Person6"],
  ["Person1", "Person2", "Person4", "Person6", "Person5"],
  ["Person1", "Person2", "Person5", "Person3", "Person6"],
  ["Person1", "Person2", "Person5", "Person4", "Person6"],
  ["Person1", "Person2", "Person5", "Person6", "Person4"],
  ["Person1", "Person2", "Person4", "Person3", "Person6"],
];

let mediciPom = ["Person1", "Person2"];

let combinazioniTemp = combinazioniMat.map((el, index) => [
  ...el,
  mediciPom[index % 2],
]);

console.log(combinazioniTemp);