二維表的第一個字符

Question

我

String table[][]= new String [i][j]; 
Scanner insertN = new Scanner(System.in); 
int N= insertN.nextInt(); 

table[i][j]="-----"; 
int number1=1; 
int number2=2; 

如何從第一到第n字符（「 - 」）獲得，並與數更換（1）

如果第N爲2 - 程序寫入表11 ---。
如果第二N爲2 - 表1122-

Answer 1

String table[][] = new String[i][j]; 
table[i][j] "-----"; 
Scanner insertN = new Scanner(System.in); 
int number1 = 1; 
int number2 = 2; 

int N = insertN.nextInt(); 
int total = N; 

//build a temporary string containing as many '1's as indicated by n 
String tmp = ""; 
for (int k = 0; k < N; k++) tmp = tmp + number1; 

N = insertN.nextInt(); 
total = total + N; 
for (int k = 0; k < N; k++) tmp = tmp + number2; 

//replace the original string with the '1's and the substring of table[i][j] 
//starting at position n and continuing to the end 
table[i][j] = tmp + table[i][j].substring(total, table[i][j].length());