Tank
unknown
java
a year ago
1.5 kB
6
Indexable
public class Change { public static void main(String[] args) { int [] [] mat = { {2,7,6}, {9,5,1}, {4,3,8} }; System.out.println(isMagicSquare(mat)); } public static boolean isMagicSquare(int [][] a) { // check matrix baris = kolom for (int i = 0 ; i <a.length ; i ++) { if (a[i].length != a.length) { return false; } }; //jumlah tiap baris sama //referensi jumlah nya int sumRef = 0; for (int i = 0 ; i<a[0].length ; i++) { sumRef += a[0][i]; } //cek jumlah tiap baris apakah sama int sumBaris = 0 ; for (int i = 0 ; i<a.length; i++) { for (int j = 0 ; j <a.length ; j++) { sumBaris += a[i][j]; }if(sumRef!=sumBaris)return false; sumBaris=0; } //cek jumlah tiap kolom apakah sama int sumKolom =0; for (int i = 0 ; i<a.length; i++) { for (int j = 0 ; j <a.length ; j++) { sumKolom += a[j][i]; }if(sumRef!=sumKolom) return false; sumKolom=0; } //cek jumlah diagonal kiri ke kanan int sum3=0; for (int i = 0 ; i<a.length; i++) { sum3 += a[i][i]; }if (sum3!= sumRef)return false; int sum4 = 0; for (int i = 0 ; i<a.length ; i++) { sum4 += a[i][a.length-1-i]; }if (sum4!= sumRef)return false; return true; } }
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