VB如何统计二维数组中相同元素的个数?答:ReDim Preserve b(1 To 2, LBound(b, 2) To UBound(b, 2) + 1) '保留原值重定义数组 b(1, UBound(b, 2)) = ""b(2, UBound(b, 2)) = 0 End If Next Next For k = LBound(b, 2) To UBound(b, 2)Print b(1, k), b(2, k)Next End Sub 'b 数组中二维下标的...
求教!js二维数组中,如何把具有相同种类name的值筛选出来,组成三维数组...答:var college = [[{name:'北京'}, {city:'西安'}],[{name:'上海'},{city:'包头'}],[{name:'广州'},{city:'福州'}],[{name:'北京'},{city:'广州'}],[{name:'广州'},{city:'太原'}],[{name:'上海'},{city:'昆明'}]];//先用map结构记录function arrayToMap(...
php 二维数组如何统计相同值出现的次数答:x=array( array('a'=>1 ,'b'=>3 ), array('a'=>1 ,'b'=>4 ), array('a'=>2 ,'b'=>4 ), array('a'=>2 ,'b'=>4 ), array('a'=>2 ,'b'=>4 ),);$result = array();foreach($x as $val){ foreach($val as $k=>$v){ $result["...
java中二维数组去重复值,怎么做?答:// 都当做字符串 String[][] arr = { { "a", "b", "cd", "e efg" }, { "1", "2" } }; // 或者定义为Object类型数组 Object[][] brr = { { "a", "b", "cd", "e efg" }, { 1, 2 }, { 'a', 'b' } };