小编Ani*_*nil的帖子

如何实现javascript函数来计算给定句子中每个单词的频率.

这是我的代码:

function search () {
  var data = document.getElementById('txt').value;
  var temp = data;
  var words = new Array();
  words = temp.split(" ");
  var uniqueWords = new Array();
  var count = new Array();


  for (var i = 0; i < words.length; i++) {
    //var count=0;
    var f = 0;
    for (j = 0; j < uniqueWords.length; j++) {
      if (words[i] == uniqueWords[j]) {
        count[j] = count[j] + 1;
        //uniqueWords[j]=words[i];
        f = 1;
      }
    }
    if (f == 0) {
      count[i] …

大家好我有多个插入语句的问题,我需要插入许多记录.我已经用这种方式编写,但记录没有插入"userbill"表.帮我？？

..这是代码:

    SQLiteDatabase db = mySQLiteHelper.getWritableDatabase();
    String sql = "insert into userbill (billid, userid, date, amount, bill_status) values (?, ?, ?, ?, ?)";

    db.beginTransaction();
    SQLiteStatement st = db.compileStatement(sql);

    try{
        for(int i=0;i<Userid.length;i++)
        {

                st.bindLong(1, billid);
                st.bindString(2, Userid[i]);
                st.bindString(3, due_date);
                st.bindDouble(4, amount/Userid.length);
                st.bindString(5, "Due");

                long entryID = st.executeInsert();
                st.clearBindings();
        }

       db.setTransactionSuccessful();
    }
    catch(Exception e)
    {
        //e.printStackTrace();
        Log.e("MYAPP", "exception", e);
    }
    finally
    {
        db.endTransaction();
    }
    db.close(); 

logcat的:

09-05 13:12:48.610:D/dalvikvm(7982):GC_FOR_ALLOC释放314K,10%免费5030K/5568K,暂停17ms,总计18ms

09-05 13:12:48.610:I/dalvikvm-heap(7982):将堆(frag case)增长到6.181MB,用于1127532字节分配

09-05 13:12:48.614:D/dalvikvm(7982):GC_FOR_ALLOC释放2K,9%免费6129K/6672K,暂停5ms,总计5ms

09-05 13:12:48.710:W/EGL_genymotion(7982):eglSurfaceAttrib未实现

09-05 13:12:57.014:I/SQLiteConnectionPool(7982):/data/data/com.perfect12.app2maintain/databases/AMTDB的连接池已关闭,但仍有1个连接正在使用中.当他们被释放回游泳池时,他们将被关闭.

09-05 13:12:57.286:W/EGL_genymotion(7982):eglSurfaceAttrib未实现