Bash solutions for week 137

2 files changed, 74 insertions, 0 deletions

diff --git a/challenge-137/abigail/bash/ch-1.sh b/challenge-137/abigail/bash/ch-1.sh
new file mode 100644
index 0000000000..a3b12c9266
--- /dev/null
+++ b/challenge-137/abigail/bash/ch-1.sh
@@ -0,0 +1,35 @@
+#!/bin/sh
+
+#
+# See ../README.md
+#
+
+#
+# Run as: bash ch-1.sh < input-file
+#
+
+set -f
+
+start_years=(1600 2000)
+m=${#start_years[@]}
+
+long_year_offsets=(  4   9  15  20  26  32  37  43  48  54 \
+                    60  65  71  76  82  88  93  99         \
+                       105 111 116 122 128 133 139 144 150 \
+                   156 161 167 172 178 184 189 195         \
+                       201 207 212 218 224 229 235 240 246 \
+                   252 257 263 268 274 280 285 291 296     \
+                           303 308 314 320 325 331 336 342 \
+                   348 353 359 364 370 376 381 387 392 398)
+n=${#long_year_offsets[@]}
+
+
+for ((j = 0; j < m; j ++))
+do  for ((i = 0; i < n; i ++))
+    do  year=$((${start_years[$j]} + ${long_year_offsets[$i]}))
+        if ((1900 <= year && year <= 2100))
+        then  echo $year
+        fi
+    done
+done
+
diff --git a/challenge-137/abigail/bash/ch-2.sh b/challenge-137/abigail/bash/ch-2.sh
new file mode 100644
index 0000000000..6776acf025
--- /dev/null
+++ b/challenge-137/abigail/bash/ch-2.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+
+#
+# See ../README.md
+#
+
+#
+# Run as: bash ch-2.sh < input-file
+#
+
+set -f
+shopt -s extglob
+
+function reverse () {
+    local str=$1
+    local len=${#str}
+    local rev=""
+    for ((i = len - 1; i >= 0; i --))
+    do  rev=$rev${str:$i:1}
+    done
+    reverse=$rev
+}
+
+function ly () {
+    local n=$1
+    reverse $n
+    local rev=${reverse/#+(0)/}
+    if ((n >= 10000000))
+    then ly=1
+    elif [[ $n = $rev ]]
+    then ly=0
+    else ly $((n + rev))
+    fi
+}
+
+while read number
+do  ly $number
+    echo $ly
+done