Solution doesn't passes two tests

Tell us what’s happening:
I Have written the code for this challenge as follows

Your code so far


function pairwise(arr, arg) {
let sum = [];
let sumArray = [];
// Step 1
for (let i = 0; i < arr.length; i++) {
  for (let j = i + 1; j < arr.length ; j++) {
    sum.push([arr[i],arr[j]])
  }
}

// Filter any item which has string in it.

console.log(sum)


// Step 2
for (let k = 0; k < sum.length; k++) {
  for (let l = 0; l < sum[k].length; l++) {
    if (sum [k][l + 1] != undefined) {
      if (sum[k][l] + sum[k][l + 1] == arg) {
        // Get the Indices of the element so matched
        // Sum the indices
        sumArray.push(arr.indexOf( sum[k][l] ) + arr.indexOf( sum[k][l + 1] ))
      }
    }
}
console.log("
")
}

let newSum = 0;
sumArray.forEach((element, key) => {
  newSum += element;
})
console.log(newSum)
return newSum;
}

pairwise([1, 4, 2, 3, 0, 5], 7)

However, the code only passes 3 test cases and the 2 test cases remain unfulfilled which are as follows:

pairwise([1, 1, 1], 2) should return 1

&

pairwise([0, 0, 0, 0, 1, 1], 1) should return 10
pairwise([1, 1, 1], 2

returns 0 &

pairwise([0, 0, 0, 0, 1, 1], 1)

returns 32.

To cope up with this problem i tried filtering my array using following approach:

sum = sum.filter((element) => (!element.includes('nope')))
sum = sum.filter((element) => !element.includes('nopetoo'))

at the end of the first for loop like this:

for (let i = 0; i < arr.length; i++) {
    for (let j = i + 1; j < arr.length ; j++) {
      sum.push([arr[i],arr[j]])
    }
  }

  // Filter any item which has string in it.
  sum = sum.filter((element) => (!element.includes('nope')))
  sum = sum.filter((element) => !element.includes('nopetoo'))
.
.
.

but when i run the updated code it fails all the test except the last one (which passes in any case).

Please Have a look and suggest something on what’s going on here…

Many thanks in advance

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Challenge: Pairwise

Link to the challenge: