public class MatriceDiStringhe {

	private String[][] mat;
	
	public MatriceDiStringhe (String[][] m){
		this.mat = new String[m.length][m.length];
		
		for (int i=0; i<m.length; i++) {
			for (int j=0; j<m.length; j++) {
				this.mat[i][j] = m[i][j];
			}
		}
	}
	
	public String primaInRiga (int i){
		String[] riga = mat[i];
	    String minima = riga[0];
	    for (int j = 1; j < riga.length; j++) {
	        if (riga[j].compareTo(minima) < 0) {
	            minima = riga[j];
	        }
	    }
	    return minima;
	}
	
	public void estraiSottomatrice(MatriceDiStringhe mds){
		for (int i=0; i<mat.length; i++) {
			for (int j=0; j<mat[i].length; j++) {
				if (Character.isLowerCase(mat[i][j].charAt(0))) {
					this.mat[i][j] = mds.mat[i][j];
				}
			}
		}
	}
	
	public String toString() {
		String s = "";
		
		for (int i=0; i<mat.length; i++) {
			for (int j=0; j<mat[i].length; j++) {
				s += this.mat[i][j] + " ";
			}
			s += "\n";
		}
		return s;
	}
	
}