'commit'

2025-08-30 18:35:01 +08:00
commit 1f397eca87
6258 changed files with 1487241 additions and 0 deletions
--- a/C++专题课程/基础知识/十六进制转八进制.cpp
+++ b/C++专题课程/基础知识/十六进制转八进制.cpp
@@ -0,0 +1,124 @@
+#include<bits/stdc++.h>
+using namespace std;
+int main() {
+	int n = 0, i = 0, j = 0, temp = 0, nNum = 0;
+	char ch;
+	string strHex[10];
+	string strBin[10];
+	string strOct[10];
+
+	cin>>n;
+	for (i = 0; i < n; ++i) {
+		cin>>strHex[i];
+	}
+
+	//ʮ<><CAAE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת<EFBFBD><D7AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+	for (i = 0; i < n; ++i) {
+		j = 0;
+		while (strHex[i][j]) {
+			switch(strHex[i][j]) {
+				case '0':
+					strBin[i] += "0000";
+					break;
+				case '1':
+					strBin[i] += "0001";
+					break;
+				case '2':
+					strBin[i] += "0010";
+					break;
+				case '3':
+					strBin[i] += "0011";
+					break;
+				case '4':
+					strBin[i] += "0100";
+					break;
+				case '5':
+					strBin[i] += "0101";
+					break;
+				case '6':
+					strBin[i] += "0110";
+					break;
+				case '7':
+					strBin[i] += "0111";
+					break;
+				case '8':
+					strBin[i] += "1000";
+					break;
+				case '9':
+					strBin[i] += "1001";
+					break;
+				case 'A':
+					strBin[i] += "1010";
+					break;
+				case 'B':
+					strBin[i] += "1011";
+					break;
+				case 'C':
+					strBin[i] += "1100";
+					break;
+				case 'D':
+					strBin[i] += "1101";
+					break;
+				case 'E':
+					strBin[i] += "1110";
+					break;
+				case 'F':
+					strBin[i] += "1111";
+					break;
+				default:
+					break;
+			}
+			++j;
+		}
+	}
+
+	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת<EFBFBD><D7AA>Ϊ<EFBFBD>˽<EFBFBD><CBBD><EFBFBD>
+	for (i = 0; i < n; ++i) {
+		j = strBin[i].size()-1;//<2F><><EFBFBD>ó<EFBFBD><C3B3><EFBFBD>
+		while (strBin[i][j] && j>=0) {
+			temp = 3;
+			nNum = 0;
+			while (temp-- && j>=0) {
+				if ('1' == strBin[i][j]) {
+					switch(temp) {
+						case 0:
+							nNum += 4;
+							break;
+						case 1:
+							nNum += 2;
+							break;
+						case 2:
+							nNum += 1;
+							break;
+						default:
+							break;
+					}
+				}
+				--j;
+			}
+			strOct[i] += (nNum+'0');
+		}
+	}
+
+	//<2F>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+	for (i = 0; i < n; ++i) {
+		temp = strOct[i].size()-1;
+		for (j = 0; j <= temp/2; ++j) {
+			ch = strOct[i][j];
+			strOct[i][j] = strOct[i][temp-j];
+			strOct[i][temp-j] = ch;
+		}
+	}
+	//<2F><>ӡ
+	for (i = 0; i < n; ++i) {
+		j = 0;
+		while (strOct[i][j++] == '0');//<2F><><EFBFBD><EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD>0
+		for(--j; j < strOct[i].size(); ++j) {
+			cout<<strOct[i][j]-'0';
+		}
+		/*if (i != n-1)*/
+		cout<<endl;
+	}
+	return 0;
+}
+