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POJ 1046 Color Me Less 最详细的解题报告

题目来源:POJ 1046 Color Me Less

题目大意:每一个颜色由R、G、B三部分组成,D=Math.sqrt(Math.pow((left.red - right.red), 2)+ Math.pow((left.green - right.green), 2)+ Math.pow((left.blue - right.blue), 2)) 表示两个不同颜色的之间的距离(以left和right为例,left和right分别为两种不同的颜色),现给出16组目标颜色,剩下的为待匹配的颜色,求出剩下的颜色与目标颜色中哪个最匹配,即D最小。

 

解题思路:直接枚举法,简单直接!

具体算法(java版,可以直接AC)

 1 import java.util.Scanner; 2  3 public class Main { 4  5     static double distance(Color left, Color right) { 6         return Math.sqrt(Math.pow((left.red - right.red), 2) 7                 + Math.pow((left.green - right.green), 2) 8                 + Math.pow((left.blue - right.blue), 2)); 9     }10 11     static Color getColor(Scanner input) {12         return new Color(input.nextInt(), input.nextInt(), input.nextInt());13     }14 15     public static void main(String[] args) {16         Scanner input = new Scanner(System.in);17         int targetCount = 16;18         Color[] targets = new Color[targetCount];19         for (int i = 0; i < targetCount; i++) {20             targets[i] = getColor(input);21         }22         while (true) {23             Color object = getColor(input);24             if (object.isEnd()) {25                 return;26             }27             double min = Double.MAX_VALUE;28             int minIndex = 0;29             for (int i = 0; i < targetCount; i++) {30                 double dist = distance(targets[i], object);31                 if (dist < min) {32                     min = dist;33                     minIndex = i;34                 }35             }36             System.out.println(String.format("%s maps to %s", object.toString(),37                     targets[minIndex].toString()));38         }39     }40 }41 42 class Color {43     public int red;44     public int green;45     public int blue;46 47     public Color(int red, int green, int blue) {48         this.red = red;49         this.green = green;50         this.blue = blue;51     }52 53     public boolean isEnd() {54         return this.red == -1 && this.green == -1 && this.blue == -1;55     }56 57     public String toString() {58         return String.format("(%d,%d,%d)", this.red, this.green, this.blue);59     }60 }

 

POJ 1046 Color Me Less 最详细的解题报告