鎼滅储鎻掑叆浣嶇疆

Posted 2020-12-21

鏍囩锛?a href='http://www.mamicode.com/so/1/%e6%8f%92%e5%85%a5' title='鎻掑叆'>鎻掑叆   tar   image   鎺掑簭   娌℃湁   break   res   sea   鐩爣   

LC 鎼滅储鎻掑叆浣嶇疆

缁欏畾涓€涓帓搴忔暟缁勫拰涓€涓洰鏍囧€硷紝鍦ㄦ暟缁勪腑鎵惧埌鐩爣鍊硷紝骞惰繑鍥炲叾绱㈠紩銆傚鏋滅洰鏍囧€间笉瀛樺湪浜庢暟缁勪腑锛岃繑鍥炲畠灏嗕細琚寜椤哄簭鎻掑叆鐨勪綅缃€?/p>

浣犲彲浠ュ亣璁炬暟缁勪腑鏃犻噸澶嶅厓绱犮€?/p>

绀轰緥 1:

杈撳叆: [1,3,5,6], 5
杈撳嚭: 2
绀轰緥 2:

杈撳叆: [1,3,5,6], 2
杈撳嚭: 1
绀轰緥 3:

杈撳叆: [1,3,5,6], 7
杈撳嚭: 4
绀轰緥 4:

杈撳叆: [1,3,5,6], 0
杈撳嚭: 0

鑷繁鎯崇殑棰樿В锛氬畬鍏ㄦ槸鏆村姏姹傝В

class Solution {
public:
	int searchInsert(vector<int>& nums, int target) {
		int result = -1;
		//姝ｅ父鏌ユ壘鍒扮殑鎯呭喌
		for (int i = 0; i < nums.size(); i++)
		{
			if (target == nums[i])
			{
				result = i;
				break;
			}
		}
		//娌℃湁鏌ユ壘鍒扮殑鎯呭喌
		if (result == -1)
		{
			for (int i = 0; i < nums.size(); i++)
			{
				if (nums[i] > target)
				{
					result = i;
					break;
				}
			}
            //target鍊兼瘮鏁扮粍涓墍鏈夊€奸兘瑕佸ぇ鐨勬儏鍐?			if (result == -1)
			{
				result = nums.size();
			}
			
		}

		return result;
	}
};

鏃堕棿澶嶆潅搴︼細O锛圢锛?/p>

绌洪棿澶嶆潅搴︼細O锛?锛?/p>

杩愯鎯呭喌濡備笅锛氾紙澶彍浜嗘垜锛?/p>

浣跨敤浜屽垎鏌ユ壘锛?/p>

//浜屽垎鏌ユ壘娉?class Solution {
public:
	int searchInsert(vector<int>& nums, int target) {
		int Left = 0;//鏁扮粍鏈€宸︾绱㈠紩
		int Right = nums.size() - 1;//鏁扮粍鏈€鍙崇绱㈠紩
		int mid = 0;
		while (Left <= Right)
		{
			//mid = (Left + Right) / 2;
            //鍙互闃叉鏁扮粍涓婃孩鍑?            mid = Left + (Right - Left)/2;
			if (nums[mid] == target)
			{
				return mid;
			}
			else if (target > nums[mid])
			{
				Left = mid + 1;
			}
			else
			{
				Right = mid - 1;
			}
		}
		return Left;
	}
};

鏃堕棿澶嶆潅搴︼細O锛坙ogN)

绌洪棿澶嶆潅搴︼細O锛圢锛?/p>

杩愯鎯呭喌锛?/p>