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letterPositions.js
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letterPositions.js
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function eqArrays(arr1, arr2) {
// loop through arr1
for (let i = 0; i < arr1.length; i++) {
// loop through arr2
for (let x = 0; x < arr2.length; x++) {
// compare current value of arr1 to current value arr2
if (arr1[i] === arr2[x]) {
// if values are the same return true
return true;
// else return false
} else {
return false;
}
}
}
}
function assertArraysEqual(boolean) {
if (boolean === true) {
console.log("These arrays are the same!");
} else {
console.log("These arrays are not the same!");
}
}
const letterPositions = function (sentence) {
const results = {};
for (let i = 0; i < sentence.length; i++) {
const letter = sentence[i];
if (letter !== " ") {
if (results[letter]) {
results[letter].push(i);
} else {
results[letter] = [i];
}
}
}
return results;
};
// test
console.log(letterPositions("lighthouse in the house"));
console.log(letterPositions("hello"));
assertArraysEqual(eqArrays(letterPositions("hello").e, [1]));
module.exports = letterPositions;