function makeAnagram(a: string, b: string): number {
    // Write your code here
    let dictA = new Map<string, number>();
    let dictB = new Map<string, number>();
    for(let ch of a){
        if (dictA.has(ch)){
            dictA.set(ch, dictA.get(ch)+1)
        }else{
            dictA.set(ch, 1)
        }
    }
    for(let ch of b){
        if (dictB.has(ch)){
            dictB.set(ch, dictB.get(ch)+1)
        }else{
            dictB.set(ch, 1)
        }
    }
    let deleteDiff = 0;
    dictA.forEach((v, k) =>{
        if (dictB.has(k)){
            deleteDiff += Math.abs(v - dictB.get(k));
        }else{
            deleteDiff +=v
        }
    })
    dictB.forEach((v, k) =>{
        if (!dictA.has(k)){
            deleteDiff += v;
        }
    })
    
    return deleteDiff
}