Plus One [Easy]

为数字数组加一
本文介绍了一种算法,用于在给定的非负整数数组中,在数组的末尾加上一个1,数组中的每个元素都是从最高位到最低位的顺序存储。

Given a non-negative number represented as an array of digits, plus one to the number.

The digits are stored such that the most significant digit is at the head of the list.

===============================Answer===============================================

public class Solution {
    public int[] plusOne(int[] digits) {
        
        if(digits==null||digits.length==0) return null;
    
        for(int i=digits.length-1;i>=0;i--) {
            if(digits[i]==9) digits[i]=0;
            else {digits[i]=digits[i]+1; return digits;}
            
        }
  
        int[] returnList = new int[digits.length+1];
        returnList[0]=1;
        for(int i=1;i<returnList.length;i++) {
            returnList[i]=0;
        }
        return returnList;

    }
}


Strophe.Connection = function (service) { /* The path to the httpbind service. */ this.service = service; /* The connected JID. */ this.jid = ""; /* request id for body tags */ this.rid = Math.floor(Math.random() * 4294967295); /* The current session ID. */ this.sid = null; this.streamId = null; // SASL this.do_session = false; this.do_bind = false; // handler lists this.timedHandlers = []; this.handlers = []; this.removeTimeds = []; this.removeHandlers = []; this.addTimeds = []; this.addHandlers = []; this._idleTimeout = null; this._disconnectTimeout = null; this.authenticated = false; this.disconnecting = false; this.connected = false; this.errors = 0; this.paused = false; // default BOSH window this.window = 5; this._data = []; this._requests = []; this._uniqueId = Math.round(Math.random() * 10000); this._sasl_success_handler = null; this._sasl_failure_handler = null; this._sasl_challenge_handler = null; // setup onIdle callback every 1/10th of a second this._idleTimeout = setTimeout(this._onIdle.bind(this), 100); }; Strophe.Connection.prototype = { /** Function: reset * Reset the connection. * * This function should be called after a connection is disconnected * before that connection is reused. */ reset: function () { this.rid = Math.floor(Math.random() * 4294967295); this.sid = null; this.streamId = null; // SASL this.do_session = false; this.do_bind = false; // handler lists this.timedHandlers = []; this.handlers = []; this.removeTimeds = []; this.removeHandlers = []; this.addTimeds = []; this.addHandlers = []; this.authenticated = false; this.disconnecting = false; this.connected = false; this.errors = 0; this._requests = []; this._uniqueId = Math.round(Math.random()*10000); }, /** Function: pause * Pause the request manager. * * This will prevent Strophe from sending any more requests to the * server. This is very useful for temporarily pausing while a lot * of send() calls are happening quickly. This causes Strophe to * send the data in a single request, saving many request trips. */ pause: function () { this.paused = true; }, /** Function: resume * Resume the request manager. * * This resumes after pause() has been called. */ resume: function () { this.paused = false; }, /** Function: getUniqueId * Generate a unique ID for use in <iq/> elements. * * All <iq/> stanzas are required to have unique id attributes. This * function makes creating these easy. Each connection instance has * a counter which starts from zero, and the value of this counter * plus a colon followed by the suffix becomes the unique id. If no * suffix is supplied, the counter is used as the unique id. * * Suffixes are used to make debugging easier when reading the stream * data, and their use is recommended. The counter resets to 0 for * every new connection for the same reason. For connections to the * same server that authenticate the same way, all the ids should be * the same, which makes it easy to see changes. This is useful for * automated testing as well. * * Parameters: * (String) suffix - A optional suffix to append to the id. * * Returns: * A unique string to be used for the id attribute. */ getUniqueId: function (suffix) { if (typeof(suffix) == "string" || typeof(suffix) == "number") { return ++this._uniqueId + ":" + suffix; } else { return ++this._uniqueId + ""; } }, /** Function: connect * Starts the connection process. * * As the connection process proceeds, the user supplied callback will * be triggered multiple times with status updates. The callback * should take two arguments - the status code and the error condition. * * The status code will be one of the values in the Strophe.Status * constants. The error condition will be one of the conditions * defined in RFC 3920 or the condition 'strophe-parsererror'. * * Please see XEP 124 for a more detailed explanation of the optional * parameters below. * * Parameters: * (String) jid - The user's JID. This may be a bare JID, * or a full JID. If a node is not supplied, SASL ANONYMOUS * authentication will be attempted. * (String) pass - The user's password. * (Function) callback The connect callback function. * (Integer) wait - The optional HTTPBIND wait value. This is the * time the server will wait before returning an empty result for * a request. The default setting of 60 seconds is recommended. * Other settings will require tweaks to the Strophe.TIMEOUT value. * (Integer) hold - The optional HTTPBIND hold value. This is the * number of connections the server will hold at one time. This * should almost always be set to 1 (the default). * (Integer) wind - The optional HTTBIND window value. This is the * allowed range of request ids that are valid. The default is 5. */ connect: function (jid, pass, callback, wait, hold, wind) { this.jid = jid; this.pass = pass; this.connect_callback = callback; this.disconnecting = false; this.connected = false; this.authenticated = false; this.errors = 0; if (!wait) wait = 60; if (!hold) hold = 1; if (wind) this.window = wind; // parse jid for domain and resource this.domain = Strophe.getDomainFromJid(this.jid); // build the body tag var body = this._buildBody().attrs({ to: this.domain, "xml:lang": "en", wait: wait, hold: hold, window: this.window, content: "text/xml; charset=utf-8", ver: "1.6", "xmpp:version": "1.0", "xmlns:xmpp": Strophe.NS.BOSH }); this.connect_callback(Strophe.Status.CONNECTING, null); this._requests.push( new Strophe.Request(body.toString(), this._onRequestStateChange.bind(this) .prependArg(this._connect_cb.bind(this)), body.tree().getAttribute("rid"))); this._throttledRequestHandler(); },
08-08
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