1 files changed, 22 insertions, 0 deletions
diff --git a/generate_test_data.sh b/generate_test_data.sh
new file mode 100755
index 0000000..1cc6c9f
--- /dev/null
+++ b/generate_test_data.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+# Note generating test data
+# may take a while
+
+mkdir -p data
+sizes=(10000 50000 100000 500000 1000000 5000000)
+
+for size in "${sizes[@]}"; do
+    for run in {1..3}; do
+        outfile="data/random_${size}_run${run}.tsv"     # '.tsv' stands for
+        echo "Generating $outfile ..."                  # tab seperaed values
+        {
+            for ((i=1; i<=size; i++)); do
+                # using 'printf' instead of 'echo'
+                # due to performance issues
+                printf "%d\t%d\n" $((1 + RANDOM % 32767)) $((1 + RANDOM % 10000))
+            done
+        } > "$outfile"
+    done
+done
+
+echo "All random data files gernated in ./data/"