diff --git a/Introduction-to-Data-Science/Week-1/Yashas/Assignment1.sh b/Introduction-to-Data-Science/Week-1/Yashas/Assignment1.sh
new file mode 100755
index 0000000..5cc940d
--- /dev/null
+++ b/Introduction-to-Data-Science/Week-1/Yashas/Assignment1.sh
@@ -0,0 +1,9 @@
+STAR=$(head -3 file.txt|grep the|wc -l)
+lines=$(grep -c ^ file.txt)
+q=$(expr "$lines" - "3")
+DIAMOND=$(tail -$q file.txt| grep "for"|wc -l)
+sed -i '1,3s/the/it/g' file.txt
+sed -i '4,$s/for/when/g' file.txt
+sort -r file.txt
+COST=$(expr $(expr $STAR \* $STAR) + $DIAMOND)
+echo "$COST"
diff --git a/Week-1/Yashas/Assignment1.sh b/Week-1/Yashas/Assignment1.sh
new file mode 100755
index 0000000..5cc940d
--- /dev/null
+++ b/Week-1/Yashas/Assignment1.sh
@@ -0,0 +1,9 @@
+STAR=$(head -3 file.txt|grep the|wc -l)
+lines=$(grep -c ^ file.txt)
+q=$(expr "$lines" - "3")
+DIAMOND=$(tail -$q file.txt| grep "for"|wc -l)
+sed -i '1,3s/the/it/g' file.txt
+sed -i '4,$s/for/when/g' file.txt
+sort -r file.txt
+COST=$(expr $(expr $STAR \* $STAR) + $DIAMOND)
+echo "$COST"