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Problem descriptionn adjacent rectangles are placed on the horizontal axis, the width of each rectangle is 1, and the height of the first (1≤i≤n) rectangle is hi. These n rectangles form a histogram. For example, the height of the six rectangles is 3, 1, 6, 5, 2, 3, respectively. Find the rectangle with the largest area in the given histogram, and its edges are parallel to the axis. For the example given above, the maximum rectangle as shown in the shaded portion, the area is 10. Inp

1. Direct call, point to GlobalConsole.log (this);2. Called in the normal function, pointing to the globalfunction fn () {Console.log (this);}FN ();3. Constructor normal call, point to Global (constructor is also normal function, can execute normally)function Student () {This.name= "Zhangsan";Console.log (this);}Student ();4. The constructor creates an instance object from the new call, pointing to the instance objectvar x=0;function Student (name,x) {This.name=name;This.x=x;Console.log (this.x)

/usr/local/mongodb/mongodbserver/etc/ MONGODB.CONF} Stop () { /usr/local/mongodb/mongodbserver/bin/mongod--config/usr/local/mongodb/ mongodbserver/etc/mongodb.conf--shutdown } case "$" in start) start ; Stop) stop ;; Restart) stop start ;; *) Echo $ "Usage: $ Start|stop|restart}" exit 1 4. After the save is complete, add the script execution permission, the command is as follows: chmod +x/etc/rc.d/init.d/mongod5. Start Mongodb,service Mongod start as shown,