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authorpommicket <pommicket@gmail.com>2022-02-18 12:36:57 -0500
committerpommicket <pommicket@gmail.com>2022-02-18 12:36:57 -0500
commit826d1afd58c2e064a9c8fdb09eda1b08469de1a8 (patch)
treeb4fedc589a1944f6cf3f451a9db976b431e89b25 /05/tcc-0.9.27/tests/tests2/25_quicksort.c
parentc42c5d94b8944e19cd17a5b540e4c70013c62b92 (diff)
newer version of tcc almost working
Diffstat (limited to '05/tcc-0.9.27/tests/tests2/25_quicksort.c')
-rw-r--r--05/tcc-0.9.27/tests/tests2/25_quicksort.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/05/tcc-0.9.27/tests/tests2/25_quicksort.c b/05/tcc-0.9.27/tests/tests2/25_quicksort.c
new file mode 100644
index 0000000..5cc08bd
--- /dev/null
+++ b/05/tcc-0.9.27/tests/tests2/25_quicksort.c
@@ -0,0 +1,83 @@
+#include <stdio.h>
+
+int array[16];
+
+//Swap integer values by array indexes
+void swap(int a, int b)
+{
+ int tmp = array[a];
+ array[a] = array[b];
+ array[b] = tmp;
+}
+
+//Partition the array into two halves and return the
+//index about which the array is partitioned
+int partition(int left, int right)
+{
+ int pivotIndex = left;
+ int pivotValue = array[pivotIndex];
+ int index = left;
+ int i;
+
+ swap(pivotIndex, right);
+ for(i = left; i < right; i++)
+ {
+ if(array[i] < pivotValue)
+ {
+ swap(i, index);
+ index += 1;
+ }
+ }
+ swap(right, index);
+
+ return index;
+}
+
+//Quicksort the array
+void quicksort(int left, int right)
+{
+ if(left >= right)
+ return;
+
+ int index = partition(left, right);
+ quicksort(left, index - 1);
+ quicksort(index + 1, right);
+}
+
+int main()
+{
+ int i;
+
+ array[0] = 62;
+ array[1] = 83;
+ array[2] = 4;
+ array[3] = 89;
+ array[4] = 36;
+ array[5] = 21;
+ array[6] = 74;
+ array[7] = 37;
+ array[8] = 65;
+ array[9] = 33;
+ array[10] = 96;
+ array[11] = 38;
+ array[12] = 53;
+ array[13] = 16;
+ array[14] = 74;
+ array[15] = 55;
+
+ for (i = 0; i < 16; i++)
+ printf("%d ", array[i]);
+
+ printf("\n");
+
+ quicksort(0, 15);
+
+ for (i = 0; i < 16; i++)
+ printf("%d ", array[i]);
+
+ printf("\n");
+
+ return 0;
+}
+
+/* vim: set expandtab ts=4 sw=3 sts=3 tw=80 :*/