Merge branch 'i.zyryanov1-master-patch-74402' into 'master'

homework 29.09

See merge request !1

homework(17-09-2022)/src/main.c

@@ -38,27 +38,56 @@ int main() {
 }
 
 int **allocateMatrix(int n, int m) {
-    // write here your implementation
-    return NULL;
+    int **matrix = malloc(n * sizeof(int *));
+    assert(matrix != NULL);
+    for (int i = 0; i < n; i++) {
+        matrix[i] = malloc(m * sizeof(int));
+        assert(matrix[i] != NULL);
+    }
+    return matrix;
 }
 
 void freeMatrix(int **matrix, int n) {
-    // write here your implementation
+    for (int i = 0; i < n; i++) {
+        free(matrix[i]);
+    }
+    free(matrix);
 }
 
 void scanfMatrix(int **matrix, int n, int m) {
-    // write here your implementation
+    for(int i = 0; i < n; i++) {
+        for(int j = 0; j < m; j++) {
+            scanf("%d", &matrix[i][j]);
+        }
+    }
 }
 
 void printfMatrix(int **matrix, int n, int m) {
-    // write here your implementation
+    for(int i = 0; i < n; i++) {
+        for(int j = 0; j < m; j++) {
+            printf("%d", matrix[i][j]);
+        }
+        printf("\n");
+    }
 }
 
 int **copyMatrix(int **matrix, int n, int m) {
-    // write here your implementation
-    return NULL;
+    int **copyMat = allocateMatrix(n, m);
+    for(int i = 0; i < n; i++) {
+        for(int j = 0; j < m; j++) {
+            copyMat[i][j] = matrix[i][j];
+        }
+    }
+    return copyMat;
 }
 
-void transposeMatrix(int **matrix, int n, int m) {
-    // write here your implementation
+int **transposeMatrix(int **matrix, int n, int m){
+    int **transposed = allocateMatrix(m, n);
+    for(int i=0; i<m; i++){
+        for(int j=0; j<n; j++){
+            transposed[j][i] = matrix[i][j];
+        }
+    }
+    freeMatrix(matrix, n);
+    return transposed;
 }