adding cs142 code

cs142/smcquay/lab06/sm_array.cc

@@ -0,0 +1,65 @@
+#include <algorithm>
+
+#include "sm_array.h"
+
+garray::garray(): size(0) {};
+
+bool garray::add(string name) {
+    if(name == "") {
+        throw string("cannot add empty string");
+    }
+    if((not contains(name)) and size < MAX_DATA_SIZE) {
+        data[size] = name;
+        size++;
+        return true;
+    }
+    else {
+        return false;
+    }
+}
+
+bool garray::contains(string name) {
+    for(int i = 0; i < size; i++) {
+        if(name == data[i])
+            return true;
+    }
+    return false;
+}
+
+bool garray::remove(string name) {
+    bool reduce = false;
+    if(contains(name)) {
+        reduce = true;
+    }
+    else {
+        return reduce;
+    }
+    garray tmp;
+    for(int i = 0; i < size; i++) {
+        if(data[i] != name) {
+            tmp.add(data[i]);
+        }
+    }
+    for(int i = 0; i < MAX_DATA_SIZE; i++) {
+        data[i] = tmp.data[i];
+    }
+    if(reduce)
+        size--;
+    return reduce;
+}
+
+void garray::randomize() {
+    random_shuffle(&data[0], &data[size]);
+}
+
+ostream & operator<<(ostream & os, garray & g) {
+    os << "[";
+    for(int i = 0; i < g.size; i++) {
+        os << i << "-" << g.data[i];
+        if (i != g.size - 1) {
+            os << ", ";
+        }
+    }
+    os << "]";
+    return os;
+}