Javascript solution

function matchingStrings(strings, queries) {

let freqObj = {}
for(let i=0; i < strings.length; i++) {
    let str = strings[i];  
    freqObj[str] = (freqObj[str] || 0) + 1; 
    }
    return queries.map(querie => freqObj[querie]) 


return queries.map(querie => freqObj[querie] || 0); 

}