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//We'll say that a String is xy-balanced if for all the 'x' chars in the string, there exists a 'y' char somewhere later in the string. So "xxy" is balanced, but "xyx" is not. One 'y' can balance multiple 'x's. Return true if the given string is xy-balanced.

//

//xyBalance("aaxbby") → true

//xyBalance("aaxbb") → false

//xyBalance("yaaxbb") → false

public boolean xyBalance(String str) {

boolean flag=true;

for (int i=0;i<str.length();i++){

if(str.charAt(i)=='x')

flag=false;

if(str.charAt(i)=='y')

flag=true;

}

return flag;

}