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3RansomNote.swift
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3RansomNote.swift
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//
// ViewController.swift
// StockPrices
//
// Created by thailinh on 5/12/20.
// Copyright © 2020 thailinh. All rights reserved.
//
import UIKit
//Swift
class Solution {
func canConstruct(_ ransomNote: String, _ magazine: String) -> Bool {
if ransomNote.count > magazine.count {
return false
}
if ransomNote.count == 0 && magazine.count == 0 {
return true
}
var mark = [Character : Int]()
for char in magazine{
if mark[char] == nil{
mark[char] = 0
}
mark[char]! += 1
}
for char in ransomNote{
if mark[char] == nil || mark[char] == 0{
return false
}
mark[char]! -= 1
}
return true
}
}
//C++
//class Solution {
//public:
// bool canConstruct(string ransomNote, string magazine) {
// if (ransomNote.size() > magazine.size())
// return false;
// if (ransomNote.size() == 0 && magazine.size() == 0)
// return true;
//
// int mark[26] = {0};
// for (char c: magazine)
// mark[c-97]++;
//
// for (char c: ransomNote) {
// if (mark[c-97] == 0)
// return false;
// mark[c-97]--;
// }
//
// return true;
// }
//};