adjacentStrings.js

// You know how sometimes you write the the same word twice in a sentence, but then don't notice that it happened? For example, you've been distracted for a second. Did you notice that *"the"* is doubled in the first sentence of this description?

// As as aS you can see, it's not easy to spot those errors, especially if words differ in case, like *"as"* at the beginning of the sentence.

// Write a function that counts the number of sections repeating the same word (case insensitive). The occurence of two or more equal words next after each other count as one.

// Example:

// "dog cat"                 --> 0
// "dog DOG cat"             --> 1
// "apple dog cat"           --> 0
// "pineapple apple dog cat" --> 0
// "apple     apple dog cat" --> 1
// "apple dog apple dog cat" --> 0
// "dog dog DOG dog dog dog" --> 1
// "dog dog dog dog cat cat" --> 2
// "cat cat dog dog cat cat" --> 3

// let searchString = "apple dog apple dog cat"

// function countAdjacentPairs(searchString) {
//   let splitString = searchString.toLowerCase().split(" ");
//   console.log(splitString);
//   let filteredArray = splitString.filter(function(item, pos){
//     return splitString.indexOf(item)!== pos; 
//   });
//   if(filteredArray)
//   return filteredArray;
//   return filteredArray.length;
// }

// countAdjacentPairs(searchString);

let searchString = "banana banana banana"

function countAdjacentPairs(searchString) {
    let splitString = searchString.toLowerCase().split(" ").filter(function (e) {
      return e != '';
    });
    let arr = [];
    for(i=0; i<splitString.length; i++){
      if(splitString[i] === splitString[i+1]){
       arr.push(splitString[i])
       if(splitString[i] === splitString[i+1] && splitString[i+1] === splitString[i+2]){
         arr.pop(splitString[i])
       }
      }
    }
    return arr.length;
  }

countAdjacentPairs(searchString);