下列程序的输出结果是public class E {public static void main (String args[ ]) {char c = '\0';for(int i=1;i<=4;i++) {switch(i) {case 1: c = 'J';System.out.print(c);case 2: c = 'e';System.out.print(c);break;case 3: c = 'p';System.out.print(c);default: System.out.print("好");}}}}
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下列程序的输出结果是public class E {public static void main (String []args) {int x = 1,y = 6;while (y-->0) {x--;}System.out.print("x="+x+",y="+y);}}
下列程序的输出结果是public class Sum {public static void main( String args[]) {double sum = 0.0 ;for ( int i = 1; i<= 38; i ++ )sum += i;System.out.println( "sum=" + sum );}}
下列程序的输出结果是public class ArrayAdd {public static void main(String args[ ]) {int i, s = 0;int a[] = {10, 20, 30, 40, 50, 60, 70, 80, 90};for ( i = 0 ; i < a.length; i++ )if(a[i] % 3 == 0) s += a[i];System.out.println("s=" + s);}}
下列程序的输出结果是public class TestArray{public static void main(String args[ ]){int i , j ;int a[ ] = {1,3,2,5,4};for ( i = 0 ; i < a.length-1; i ++ ) {int k = i;for ( j = i ; j < a.length ; j++ )if ( a[j]>a[k] ) k = j;int temp =a[i];a[i] = a[k];a[k] = temp;}for ( i =0 ; i < a.length; i ++)System.out.print(a[i]+" ");System.out.println( );}}