Basic Algorithm Scripting - Where do I Belong

JavaScript
1

why does it keep coming back undefined… am i messing up syntactically somewhere?

Your code so far

function getIndexToIns(arr, num) {
  arr = arr.sort()
  let vetNum;

  for(let i = 0; i < arr.length; i+= 1 ){
     vetNum = arr[i];
    
    if(num > vetNum && num < vetNum + 1 ){
      return arr.indexof(vetNum)
    }
  }

}

console.log(getIndexToIns([10, 20, 30, 40, 50], 35));

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Challenge: Basic Algorithm Scripting - Where do I Belong

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4

cool cool thanks… but why is my code itself returning undefined instead of

arr.indexof(vetNum)
5

why does the if statement get ignored

7

is my updated code… now

arr.indexof(vetNum) // is not a function

???

function getIndexToIns(arr, num) {
  arr.sort();
  let vetNum;
  let vetter;

  for(let i = 0; i < arr.length; i+= 1 ){
     vetNum = arr[i];
     vetter = arr[i+1]




    
    if(num > vetNum && num < vetter ){
      return arr.indexof(vetNum)
    }
  }

}

console.log(getIndexToIns([10, 20, 30, 40, 50], 35));
8

includes updated console.logs with added variable vetter

function getIndexToIns(arr, num) {
  console.log('\n', arr, num)



  arr.sort();
  let vetNum;
  let vetter;

  for(let i = 0; i < arr.length; i+= 1 ){
     vetNum = arr[i];
     vetter = arr[i+1]

     console.log(`num = ${num}, vetNum = ${vetNum} vetter = ${vetter}`)



    
    if(num > vetNum && num < vetter ){
      return arr.indexof(vetNum)
    }
  }

}

console.log(getIndexToIns([10, 20, 30, 40, 50], 35));
10

also tried assigning result to variable for a larger scope…

function getIndexToIns(arr, num) {
  console.log('\n', arr, num)



  arr.sort();
  let vetNum;
  let vetter;
  let result;

  for(let i = 0; i < arr.length; i+= 1 ){
     vetNum = arr[i];
     vetter = arr[i+1]

     console.log(`num = ${num}, vetNum = ${vetNum} vetter = ${vetter}`)



    
    if(num > vetNum && num < vetter ){
      result = arr.indexof(vetNum)
      return result
    }
  }

}

console.log(getIndexToIns([10, 20, 30, 40, 50], 35));




arr.indexof(vetNum) // is not a function
12

ok i see that … now? why is the sort effect not numerical…
i included a “post sort()” console.log and im now differently confused

function getIndexToIns(arr, num) {
  console.log('\n', arr, num)



  arr.sort();
  console.log(arr)
  let vetNum;
  let vetter;
  let result;

  for(let i = 0; i < arr.length; i+= 1 ){
     vetNum = arr[i];
     vetter = arr[i+1]

     console.log(`num = ${num}, vetNum = ${vetNum} vetter = ${vetter}`)



    
    if(num > vetNum && num < vetter ){
      result = arr.indexOf(vetNum)
      return result
    }
  }

}

console.log(getIndexToIns([10, 20, 30, 40, 50], 35));
14

can you possibly supply a tiiiiiny bit more instructional and exampling of a compare Fn… i m swriling around comprehension here… but am struggling to touch down
hahaha

15

like the raw step by step implementation of the compareFn itself… its architecture is not “obvious” to me yet?

16

Here’s an article on it

17

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