题目：

题解：

func canConstruct(ransomNote, magazine string) bool {
    if len(ransomNote) > len(magazine) {
        return false
    }
    cnt := [26]int{}
    for _, ch := range magazine {
        cnt[ch-'a']++
    }
    for _, ch := range ransomNote {
        cnt[ch-'a']--
        if cnt[ch-'a'] < 0 {
            return false
        }
    }
    return true
}