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3.D
//'main' method must be in a class 'Rextester'. //openjdk version '11.0.5' // Razak-7051 import java.util.*; import java.lang.*; class Rextester { public static void main(String[] args) { System.out.println("Floyd's triangle pattern is "); int i,j,rows=5; int count=1; for(i=1; i<=rows; i++) { for(j=1; j<=i; j++) { if((i+j)%2==1) System.out.print("0"); else System.out.print("1"); } System.out.println(); } System.out.println(); } }
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