init

greed/179.h

@@ -0,0 +1,28 @@
+#include <stdlib.h>
+
+long cmp(int *x, int *y) {
+    unsigned long sx = 10, sy = 10;
+    while (sx <= *x) {
+        sx *= 10;
+    }
+    while (sy <= *y) {
+        sy *= 10;
+    }
+    return sx * (*y) + (*x) - sy * (*x) - (*y);
+}
+
+char *largestNumber(int *nums, int numsSize) {
+    qsort(nums, numsSize, sizeof(int), cmp);
+    if (nums[0] == 0) {
+        char *ret = malloc(sizeof(char) * 2);
+        ret[0] = '0', ret[1] = '\0';
+        return "0";
+    }
+    char *ret = malloc(sizeof(char) * 1000);
+    char *p = ret;
+    for (int i = 0; i < numsSize; i++) {
+        sprintf(p, "%d", nums[i]);
+        p += strlen(p);
+    }
+    return ret;
+}