比较两个字符串A和B,确定A中是否包含B中所有的字符。字符串A和B中的字符都是大写字母
给出 A = "ABCD"
B = "ACD"
,返回 true
给出 A = "ABCD"
B = "AABC"
, 返回 false
public class Solution {
/**
* @param A : A string includes Upper Case letters
* @param B : A string includes Upper Case letter
* @return : if string A contains all of the characters in B return true else return false
*/
public boolean compareStrings(String A, String B) {
// write your code here
StringBuffer sb1 = new StringBuffer(A);
StringBuffer sb2 = new StringBuffer(B);
int result = 0;
for(int i = 0; i < sb2.length(); i++){
boolean temp = true;
for(int j=0; j < sb1.length(); j++){
if(sb1.charAt(j) == sb2.charAt(i)){
sb1.setCharAt(j,' ');
temp=false;
break;
}
}
if(temp) return false;
}
return true;
}
}
public class Solution {
/**
* @param A : A string includes Upper Case letters
* @param B : A string includes Upper Case letter
* @return : if string A contains all of the characters in B return true else return false
*/
public boolean compareStrings(String A, String B) {
// write your code here
StringBuffer sbA = new StringBuffer(A);
StringBuffer sbB = new StringBuffer(B);
int[] sa = new int[27];
for(int i=0; i < sbA.length(); i++){
sa[sbA.charAt(i)-'A']++;
}for(int j=0;j < sbB.length(); j++){
sa[sbB.charAt(j)-'A']--;
}
for(int k=0; k<27; k++){
if(sa[k]<0) return false;
}
return true;
}
}