Merge pull request neetcode-gh#2836 from mdmzfzl/main

Create: 0846-hand-of-straights.c

Author: mdmzfzl

c/0846-hand-of-straights.c

@@ -0,0 +1,21 @@
+int cmpfunc(const void* a, const void* b) {
+    return (*(int*)a - *(int*)b);
+}
+
+bool isNStraightHand(int* hand, int handSize, int groupSize) {
+    if (handSize % groupSize != 0) return false;
+
+    qsort(hand, handSize, sizeof(int), cmpfunc);
+
+    for (int i = 0; i < handSize; i++) {
+        if (hand[i] == -1) continue;
+        int k = i;
+        for (int j = 1; j < groupSize; j++) {
+            while (k < handSize && hand[i] + j != hand[k]) k++;
+            if (k == handSize) return false;
+            hand[k] = -1;
+        }
+    }
+
+    return true;
+}