Exercise notes 13 (effective letter ectopic words)

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One 、 subject

Effective alphabetic words

Two 、 Code

class Solution {
    
    public boolean isAnagram(String s, String t) {
    
        char[] str1 = s.toCharArray();
        char[] str2 = t.toCharArray();
        Arrays.sort(str1);
        Arrays.sort(str2);
        return Arrays.equals(str1, str2);
    }
}

class Solution {
    
public:
    bool isAnagram(string s, string t) {
    
    sort(s.begin(),s.end());
    sort(t.begin(),t.end());
    if(s==t)
    {
    
        return true;
    }
    else 
    {
    
        return false;
    }
    }
};

3、 ... and 、 summary

1. Because we need to consider all the characters of the two strings and the number of their occurrences , Therefore, the first thought is to sort the two strings to determine whether they are equal . use sort Function can facilitate sorting .
2.toCharArray()