Create FillingJars.c

https://www.hackerrank.com/challenges/filling-jars/problem

FillingJars.c

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+#include <assert.h>
+#include <ctype.h>
+#include <limits.h>
+#include <math.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+char* readline();
+char* ltrim(char*);
+char* rtrim(char*);
+char** split_string(char*);
+
+int parse_int(char*);
+
+/*
+ * Complete the 'solve' function below.
+ *
+ * The function is expected to return an INTEGER.
+ * The function accepts following parameters:
+ *  1. INTEGER n
+ *  2. 2D_INTEGER_ARRAY operations
+ */
+
+long solve(long n, long operations_rows, int operations_columns, long** operations) {
+
+    long *arr = (long *) malloc (n*sizeof(long));
+    memset(arr, 0, n);
+    long sum = 0;
+    for (long i = 0; i<operations_rows; i++) 
+    {
+        long arrValue[3] = {0};
+        for(int j=0; j<operations_columns; j++)
+        {
+            arrValue[j] = *(*(operations + i) + j);
+        }
+        for(long k=arrValue[0]-1; k<=arrValue[1]-1; k++)
+        {
+            sum+=arrValue[2];
+        }        
+    }
+    return sum/n;
+}
+
+int main()
+{
+    FILE* fptr = fopen(getenv("OUTPUT_PATH"), "w");
+    char* eptr;
+
+    char** first_multiple_input = split_string(rtrim(readline()));
+
+    long n = strtoll(*(first_multiple_input + 0), &eptr, 10);
+    long m = strtoll(*(first_multiple_input + 1), &eptr, 10);
+
+    long** operations = malloc(m * sizeof(long*));
+
+    for (long i = 0; i < m; i++) {
+        *(operations + i) = malloc(3 * (sizeof(long)));
+
+        char** operations_item_temp = split_string(rtrim(readline()));
+
+        for (int j = 0; j < 3; j++) {
+            long operations_item = strtoll(*(operations_item_temp + j), &eptr, 10);
+
+            *(*(operations + i) + j) = operations_item;
+        }
+    }
+    long result = solve(n, m, 3, operations);
+    fprintf(fptr, "%lu\n", result);
+
+    fclose(fptr);
+
+    return 0;
+}
+
+char* readline() {
+    size_t alloc_length = 1024;
+    size_t data_length = 0;
+
+    char* data = malloc(alloc_length);
+
+    while (true) {
+        char* cursor = data + data_length;
+        char* line = fgets(cursor, alloc_length - data_length, stdin);
+
+        if (!line) {
+            break;
+        }
+
+        data_length += strlen(cursor);
+
+        if (data_length < alloc_length - 1 || data[data_length - 1] == '\n') {
+            break;
+        }
+
+        alloc_length <<= 1;
+
+        data = realloc(data, alloc_length);
+
+        if (!data) {
+            data = '\0';
+
+            break;
+        }
+    }
+
+    if (data[data_length - 1] == '\n') {
+        data[data_length - 1] = '\0';
+
+        data = realloc(data, data_length);
+
+        if (!data) {
+            data = '\0';
+        }
+    } else {
+        data = realloc(data, data_length + 1);
+
+        if (!data) {
+            data = '\0';
+        } else {
+            data[data_length] = '\0';
+        }
+    }
+
+    return data;
+}
+
+char* ltrim(char* str) {
+    if (!str) {
+        return '\0';
+    }
+
+    if (!*str) {
+        return str;
+    }
+
+    while (*str != '\0' && isspace(*str)) {
+        str++;
+    }
+
+    return str;
+}
+
+char* rtrim(char* str) {
+    if (!str) {
+        return '\0';
+    }
+
+    if (!*str) {
+        return str;
+    }
+
+    char* end = str + strlen(str) - 1;
+
+    while (end >= str && isspace(*end)) {
+        end--;
+    }
+
+    *(end + 1) = '\0';
+
+    return str;
+}
+
+char** split_string(char* str) {
+    char** splits = NULL;
+    char* token = strtok(str, " ");
+
+    int spaces = 0;
+
+    while (token) {
+        splits = realloc(splits, sizeof(char*) * ++spaces);
+
+        if (!splits) {
+            return splits;
+        }
+
+        splits[spaces - 1] = token;
+
+        token = strtok(NULL, " ");
+    }
+
+    return splits;
+}
+
+int parse_int(char* str) {
+    char* endptr;
+    int value = strtol(str, &endptr, 10);
+
+    if (endptr == str || *endptr != '\0') {
+        exit(EXIT_FAILURE);
+    }
+
+    return value;
+}