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package example.SlidingWindow; public class Example2 { public int longestKStringOfx(String s,int k,char x) { int ans = 0; int Nx = 0; for(int right = 0;right=0) { char cf = s.charAt(left); if(cf==x) Nx--; } if(Nx>ans) ans=Nx; } return ans; } public static void main(String[] args) { int k=3; String s = "abaaaccsddaa"; char x = 'a'; Example1 example1 = new Example1(); System.out.println(example1.longestKStringOfx(s,k,x)); s = "abcdeaaadfewfsaaadassaaaaaddddaass"; k = 5; x = 'a'; System.out.println(example1.longestKStringOfx(s,k,x)); } }