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letterPositions.js
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letterPositions.js
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const eqArrays = function(arr1, arr2) {
if (arr1.length !== arr2.length) {
return false;
}
for (let i = 0; i < arr1.length; i++) {
if (arr1[i] !== arr2[i]) {
return false;
}
}
return true;
};
// Function to assert arrays are equal
const assertArraysEqual = function(arr1, arr2) {
const message = eqArrays(arr1, arr2)
? "Assertion passed: Arrays are equal"
: "Assertion Failed: Arrays are not equal";
console.log(message);
};
// Implementing letterPositions function
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 case
const result = letterPositions("hello");
// Testing with assertArraysEqual
assertArraysEqual(result['h'], [0]);
assertArraysEqual(result['e'], [1]);
assertArraysEqual(result['l'], [2, 3]);
assertArraysEqual(result['o'], [4]);