Syntax error Delete every one of the two strings that start with the same letter in JavaScript

Delete every one of the two strings that start with the same letter in JavaScript

We are required to write a JavaScript function that takes in an array of strings and deletes every one of the two strings that start with the same letter.

For example, If the actual array is −

const arr = ['Apple', 'Jack' , 'Army', 'Car', 'Jason'];

Then we have to delete and keep only one string in the array distinct letters, so one of the two strings starting with A should get deleted and the same should the one with J.

Example

The code for this will be −

const arr = ['Apple', 'Jack' , 'Army', 'Car', 'Jason'];
const delelteSameLetterWord = arr => {
   const map = new Map();
   arr.forEach((el, ind) => {
      if(map.has(el[0])){
         arr.splice(ind, 1);
      }else{
         map.set(el[0], true);
      };
   });
};
delelteSameLetterWord(arr);
console.log(arr);

Output

The output in the console −

[ 'Apple', 'Jack', 'Car' ]
Updated on: 2020-10-14T07:53:32+05:30

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