Pascal's triangle: Difference between revisions

Content added Content deleted

Inline

@@ Line 3,268: / Line 3,268: @@
 <lang bash>#! /bin/bash
 pascal() {
-    local -i level=${1:-1} n
+    local -i n=${1:-1}
-    if (( level <= 1 )); then
+    if (( n <= 1 )); then
         echo 1
     else
-        local output=$( $FUNCNAME $((level - 1)) )
+        local output=$( $FUNCNAME $((n - 1)) )
         set -- $( tail -n 1 <<<"$output" )   # previous row
         echo "$output"
-        n=0
+        printf "1 "
-        for arg do
+        while [[ -n $1 ]]; do
-            printf "%d " $((n + arg))
+            printf "%d " $(( $1 + ${2:-0} ))
-            n=$arg
+            shift
         done
-        echo 1
+        echo
     fi
 }