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1sem/programming basics/z10/28.cpp

@@ -0,0 +1,61 @@
+// pb_z10_28.cpp
+// Горбацевич Андрей
+#include <iostream>
+#include <vector>
+#include <cstring>
+
+#define MAX_STR 5000
+using namespace std;
+
+void rstrip(char*, const char*);
+char* get_string();
+void println_string(const char*);
+
+int main() {
+    char *s, *chars;
+    cout << "Input string:" << endl;
+    s = get_string();
+    cout << "Input chars:" << endl;
+    chars = get_string();
+    cout << "String before:" << endl;
+    println_string(s);
+    rstrip(s, chars);
+    cout << "String after:" << endl;
+    println_string(s);
+}
+
+void rstrip(char *s, const char *chars) {
+    int rpad = 0;
+    int i = (int)strlen(s)-1;
+    bool found;
+    do {
+        found = false;
+        char cc = *(s + i--);
+        for (size_t j = 0; j < strlen(chars); j++) {
+            if (cc == *(chars + j)) {
+                rpad += 1;
+                found = true;
+                *(s + i+1) = '\0';
+                break;
+            }
+        }
+    } while (found && i >= 0);
+}
+
+char* get_string() {
+    int c = 0;
+    char *s = new char[MAX_STR];
+    char ch;
+    while ((ch = cin.get()) != '\n') {
+        *(s + c++) = ch;
+    }
+    *(s + c) = '\0';
+    return s;
+}
+
+void println_string(const char* s) {
+    for (size_t i = 0; i < strlen(s); i++) {
+        cout << *(s + i);
+    }
+    cout << endl;
+}

1sem/programming basics/z10/29.cpp

@@ -0,0 +1,85 @@
+// pb_z10_29.cpp
+// Горбацевич Андрей
+#include <iostream>
+#include <vector>
+#include <cstring>
+
+#define MAX_STR 5000
+using namespace std;
+
+void strip(char*, const char*);
+char* get_string();
+void println_string(const char*);
+
+int main() {
+    char *s, *chars;
+    cout << "Input string:" << endl;
+    s = get_string();
+    cout << "Input chars:" << endl;
+    chars = get_string();
+    cout << "String before:" << endl;
+    println_string(s);
+    strip(s, chars);
+    cout << "String after:" << endl;
+    println_string(s);
+}
+
+void strip(char *s, const char *chars) {
+    int lpad = 0;
+    int fi = 0;
+    bool found;
+    do {
+        found = false;
+        char cc = *(s + fi);
+        for (size_t j = 0; j < strlen(chars); j++) {
+            if (cc == *(chars + j)) {
+                lpad += 1;
+                found = true;
+                break;
+            }
+        }
+        fi++;
+    } while(found && fi >= 0);
+    if(lpad > 0)
+    {
+        size_t i;
+        for (i = 0; i < strlen(s) - lpad; i++)
+        {
+            *(s + i) = *(s + i + lpad);
+        }
+        *(s + i) = '\0';
+    }
+
+    int rpad = 0;
+    int ei = (int)strlen(s)-1;
+    do {
+        found = false;
+        char cc = *(s + ei--);
+        for (size_t j = 0; j < strlen(chars); j++) {
+            if (cc == *(chars + j)) {
+                rpad += 1;
+                found = true;
+                *(s + ei + 1) = '\0';
+                break;
+            }
+        }
+    } while (found && ei >= 0);
+}
+
+char* get_string() {
+    int c = 0;
+    char *s = new char[MAX_STR];
+    char ch;
+    while ((ch = cin.get()) != '\n') {
+        *(s + c++) = ch;
+    }
+    *(s + c) = '\0';
+    return s;
+}
+
+void println_string(const char* s) {
+    for (size_t i = 0; i < strlen(s); i++) {
+        cout << *(s + i);
+    }
+    cout << endl;
+}

1sem/programming basics/z10/30.cpp

@@ -0,0 +1,70 @@
+// pb_z10_30.cpp
+// Горбацевич Андрей
+#include <iostream>
+#include <vector>
+#include <cstring>
+
+#define MAX_STR 5000
+using namespace std;
+
+size_t join(char*, size_t , const char*const*, size_t, const char*);
+char* get_string();
+char** get_string_list(size_t);
+void println_string(const char*);
+
+int main() {
+    size_t n_in;
+    cout << "Count of strings >>>";
+    cin >> n_in;
+    cout << "Strings:" << endl;
+    char **s_in = get_string_list(n_in+1);
+    cout << "Joiner separator >>>";
+    char *sep = get_string();
+    cout << "Max length >>>";
+    size_t len;
+    cin >> len;
+    char *s_out = new char[len];
+    size_t f_len = join(s_out, len, s_in, n_in, sep);
+    cout << "Joined string:" << endl;
+    println_string(s_out);
+}
+
+size_t join(char *s_out, size_t len, const char *const *s_in, size_t n_in, const char *sep) {
+    string ps_out;
+    ps_out += string(*(s_in + 1));
+    for (size_t i = 2; i <= n_in; i++) {
+        ps_out += string(sep) + string(*(s_in + i));
+    }
+    size_t mnl = min(len, ps_out.length());
+    for (size_t i = 0; i < mnl; i++) {
+        *(s_out + i) = ps_out.c_str()[i];
+    }
+    *(s_out + mnl) = '\0';
+    return strlen(s_out);
+}
+
+char** get_string_list(size_t count) {
+    char **arr = new char*[count];
+    for (size_t i = 0; i < count; i++) {
+        *(arr + i) = get_string();
+    }
+    return arr;
+}
+
+char* get_string() {
+    int c = 0;
+    char *s = new char[MAX_STR];
+    char ch;
+    while ((ch = cin.get()) != '\n') {
+        *(s + c++) = ch;
+    }
+    *(s + c) = '\0';
+    return s;
+}
+
+void println_string(const char* s) {
+    for (size_t i = 0; i < strlen(s); i++) {
+        cout << *(s + i);
+    }
+    cout << endl;
+}