How to get values between two numbers in an array?-CodePudding

["10","13"] is the array, need to find the values between them and flatten the array with the values -> ["10","11","12","13"].

The first array above (["10", "13"]) is in a list of arrays.

const OriginalData = {
   Red:{
      Name:"L",
      List:[
         ["1", "5"],
         ["2", "5"],
         ["7", "9" ],
      ]
   },
   Blue:{
      Name:"BL",
      List:[
         ["1", "5"],
         ["7", "9" ],
         ["10", "13" ],
         ["15", "20"]
      ]
   },
   Black:{
      List:[
         ["Random"],
         "Random2"
      ]
   }
}

Then finally Object must look like,

{
   Level:{
      Name:"L",
      List:[
        1, 2, 3, 4, 5, 7, 8, 9
      ]
   },
   Basement:{
      Name:"BL",
      List:[
        1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20
     ] 
   },
   Custom:{
      List:[
         "Random",
         "Random2"
      ]
   }
}

What It should do: Take the first object, inside List there are set of ranges, the values between those ranges should be found a flatten without duplicates. Finding the values between is only for "Red", and "Blue", In "Black" key only flatten is needed.

I tried,

Code:

  const submitData = () => {
    let obj = originalData;
    let flattenedArray = [].concat.apply([], originalData.Red.List);
    let uniqueArray = flattenedArray.filter(
      (v, i, a) => a.indexOf(v) === i
    );
    obj = {
      ...originalData,
      Red: {
        ...originalData.Red,
        List: uniqueArray,
      },
    };
    console.log(obj);
  };

The above code flattens the array but will not find between the numbers and it only worked for key "Red"

CodePudding user response：

You can flat the array, get the min and max and finally with a loop create the desired array.

const array = [["1","5"],["7","9"],["10","13"],["15","20"]];         
const flatted = array.flat();
const min = Math.min(...flatted);
const max = Math.max(...flatted);

const result = Array.from({length: max   1 - min}).map(function(_, i) {
    return i   min;
});

console.log(result);

.as-console-wrapper { max-height: 100% !important; top: 0; }

CodePudding user response：

A simple example to create a range:

let example = ["10","13"];
let min = Math.min(...example);
let max = Math.max(...example);
let result = [];

for (i = min; i <= max; i  ) {
  result.push(i);
}

console.log(min, max, result)

CodePudding user response：

You can easily achieve it with a simple logic and will work for random numbers as well.

Try this (Descriptive comments of implementation has been added in the below code snippet) :

const OriginalData = {
   Red:{
      Name:"L",
      List:[
         ["1", "5"],
         ["2", "5"],
         ["7", "9" ],
      ]
   },
   Blue:{
      Name:"BL",
      List:[
         ["1", "5"],
         ["7", "9" ],
         ["10", "13" ],
         ["15", "20"]
      ]
   }
};

Object.keys(OriginalData).forEach(key => {
  // Flatten the original array list. 
    OriginalData[key].List = OriginalData[key].List.flat()
  // Find min and max numbers from the array.
  const min = Math.min(...OriginalData[key].List);
  const max = Math.max(...OriginalData[key].List);
  // empty existing list array.
  OriginalData[key].List = [];
  // Now using for loop assign the values to the list array based on min and max value.
  for (let i = min; i <= max; i  ) {
    OriginalData[key].List.push(i);
  }
});

// Result
console.log(OriginalData);

CodePudding user response：

Hope the below codes help you.

const OriginalData = {
    Red: {
        Name: "L",
        List: [
            ["1", "5"],
            ["2", "5"],
            ["7", "9"],
        ]
    },
    Blue: {
        Name: "BL",
        List: [
            ["1", "5"],
            ["7", "9"],
            ["10", "13"],
            ["15", "20"]
        ]
    },
    Black: {
        List: [
            ["Random"],
            "Random2"
        ]
    }
};
Object.keys(OriginalData).forEach(key => {
    OriginalData[key].List = OriginalData[key].List.flat();
    if (!isNaN(parseInt(OriginalData[key].List[0]))) {
        const min = Math.min(...OriginalData[key].List);
        const max = Math.max(...OriginalData[key].List);

        let tmpArr = [];
        for (let i = min; i <= max; i  ) {
            tmpArr.push(i);
        }
        OriginalData[key].List = tmpArr;
    }
});

console.log(OriginalData);