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let allow = "docgotrark";
proc(allow);
function proc(allow) {
let f = {} // hash containing allowed letters & counts
fill(f, allow);
let words = ["dog", "chair", "rack", "doggo"];
let ans = [];
for (let word of words) {
let g = {};
fill(g, word);
if (comp(f,g) == 1) {
ans.push(word);
}
}
console.log("Input:", allow);
console.log("Output:", ans);
}
// fills a hashmap to count letters
function fill(f, word) {
for (let c of word) {
f[c] = 0;
}
for (let c of word) {
f[c]++;
}
}
// compare hashes, f is allowed chars, g is the word
function comp(f,g) {
for (let k of Object.keys(g)) {
if (!(k in f)) {
return 0;
}
if (f[k] < g[k]) {
return 0;
}
}
return 1;
}
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