---
description: review str.replace method
---

# #383 Ransom Note

LeetCode[^1]

```
Given two strings ransomNote and magazine, 
return true if ransomNote can be constructed by 
using the letters from magazine and false otherwise.

Each letter in magazine can only be used once in ransomNote.

 

Example 1:

Input: ransomNote = "a", magazine = "b"
Output: false
Example 2:

Input: ransomNote = "aa", magazine = "ab"
Output: false
Example 3:

Input: ransomNote = "aa", magazine = "aab"
Output: true

 * @param {string} ransomNote
 * @param {string} magazine
 * @return {boolean}
 */
var canConstruct = function(ransomNote, magazine) {
   
};
```

### 怎麼解

其實就是複習字串 replace method

```
var canConstruct = function(ransomNote, magazine) {
    for(let char of magazine){
        ransomNote = ransomNote.replace(char, "")
    }

    if(ransomNote === "") {return true}
    return false
};
```



[^1]: 
