if else loop

gistfile1

for (int i = 0; i < length ; i++ ) {
		 	double ran = Math.random();
		 	if(ran <= 0.25){
		 		seqence[i] = 'a';
		 	}else if( ran < 0.25 && ran<=0.5 ){
		 		seqence[i] = 'c';
		 	}else if( ran < 0.5 && ran <= 0.75 ){
		 		seqence[i] = 'g';
		 	}else{
		 		seqence[i] = 't';
		 	}
		 }