Answer:
I hope this should be helpful
Explanation:
In Javascript
function solution(numbers) {
let hashmap = {};
let ans = [];
for (let i = 0; i < numbers.length; i++) {
// check wether it double or single digit
if (hasOneDigit(numbers[i])) {
// check if it exists in hashmap
// if exist add number of occurence
// check if the occurence is greater than 2
// add if > 2 to the answer list
if (numbers[i] in hashmap) {
hashmap[numbers[i]] = hashmap[numbers[i]] + 1;
if (hashmap[numbers[i]] = 2 && !ans.includes(numbers[i])) {
// max_freq = hashmap[numbers[i]]
ans.push(numbers[i]);
}
// else if (max_freq == hashmap[numbers[i]])
// ans = min(ans, numbers[i])
} else {
hashmap[numbers[i]] = 1;
}
} else {
// change number to string
number = numbers[i].toString();
// loop to iterate every single element
for (let j = 0; j < number.length; j += 1) {
if (+number.charAt(j) in hashmap) {
hashmap[+number.charAt(j)] = hashmap[+number.charAt(j)] + 1;
if (hashmap[+number.charAt(j)] = 2 && !ans.includes(+number.charAt(j))) {
ans.push(+number.charAt(j));
}
} else {
hashmap[+number.charAt(j)] = 1
}
}
}
}
return ans.sort();
}
function hasOneDigit(val) {
return String(Math.abs(val)).charAt(0) == val;
}
console.log(solution([2, 1,42,44, 2, 3,32,7777, 3 , -1]));
