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letterPositions.js
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letterPositions.js
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const assertArraysEqual = function(a,b) {
if (eqArrays(a,b)) {
console.log(`✅✅✅Assertion Passed: ${a} === ${b}`);
return `✅✅✅Assertion Passed: ${a} === ${b}`;
}
if (!eqArrays(a,b)) {
console.log(`🛑🛑🛑Assertion Failed: ${a} !== ${b}`);
return `🛑🛑🛑Assertion Failed: ${a} !== ${b}`;
}
};
const eqArrays = function(a, b) {
if (a.length !== b.length) {
return false;
}
if (a.length === b.length) {
for (let i = 0; i < a.length; i++) {
if (a[i] !== b[i]) {
return false;
}
}
return true;
}
};
const letterPositions = function(sentence) {
const results = {};
// logic to update results here
for (let i = 0; i < sentence.length; i++) {
if (results[sentence[i]]) {
results[sentence[i]].push(i);
}
if (!results[sentence[i]]) {
results[sentence[i]] = [i];
}
}
return results;
};
// assertArraysEqual(letterPositions("hello").e, [1]);
module.exports = letterPositions;