UVA 253-Cube painting
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UVA 253-Cube painting
题目大意:用题目顺序来读正方体各个面的字母,判断俩个正方体是否是同一个正方体
解题思路:正方体共六个面,可以把每2个对面进行组合,形成3个组合,让r对应1,b对应3,g对应5,组合面字母所对应的数字相加得到一个数字,如r与b组合得到1+3=4,俩个正方体都将3个数字排序,然后逐个比较,如果都相同说明是同一个正方体
#include <stdio.h>#include <string.h>#include <iostream>using namespace std;int turn(char a) { switch(a) { case 'r': return 1; case 'b': return 3; case 'g': return 5; } return 0;}int cmd(const void* a, const void* b) { return (*(int*)a - *(int*)b);}int main() { char c[20]; int a[3]; int b[3]; while(gets(c) && c[0] != EOF) { for(int i = 0; i < 3; i++) { int j = 5 - i; a[i] = turn(c[i]) + turn(c[j]); } int m = 0; for(int i = 6; i < 9; i++) { int j = 11 - i + 6; b[m] = turn(c[i]) + turn(c[j]); m++; } qsort(a, 3, sizeof(int), cmd); qsort(b, 3, sizeof(int), cmd); int res = 1; for(int i = 0; i < 3; i++) { if(a[i] != b[i]) { res = 0; break; } } if(res == 1) printf("TRUE\n"); else printf("FALSE\n"); } return 0;}
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