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countOnly.js
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countOnly.js
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const assertEqual = function(actual, expected) {
if (actual === expected) {
console.log(`✅✅✅ Assertion Passed: ${actual} === ${expected}`);
} else {
console.log(`🛑🛑🛑 Assertion Failed: ${actual} !== ${expected}`);
}
};
const countOnly = function(allItems, itemsToCount) {
const results = {};
for(let item in itemsToCount){
if(itemsToCount[item]){
let count = 0;
for( let element of allItems){
if(item === element){
count++;
}
}
if(count !== 0) results[item] = count;
}
}
return results;
}
const firstNames = [
"Karl",
"Salima",
"Agouhanna",
"Fang",
"Kavith",
"Jason",
"Salima",
"Fang",
"Joe"
];
const result1 = countOnly(firstNames, { "Jason": true, "Karima": true, "Fang": true, "Agouhanna": false });
assertEqual(result1["Jason"], 1);
assertEqual(result1["Karima"], undefined);
assertEqual(result1["Fang"], 2);
assertEqual(result1["Agouhanna"], undefined);
module.exports = countOnly;