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| -rw-r--r-- | challenge-118/cheok-yin-fung/awk/ch-1.awk | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/challenge-118/cheok-yin-fung/awk/ch-1.awk b/challenge-118/cheok-yin-fung/awk/ch-1.awk new file mode 100644 index 0000000000..fe7e67c04b --- /dev/null +++ b/challenge-118/cheok-yin-fung/awk/ch-1.awk @@ -0,0 +1,20 @@ +# The Weekly Challenge 118 +# Task 1 Binary Palindrome +# Usage: echo "N" | awk -f 'ch-1.awk' +# or: awk -f 'ch-1.awk' < file_contains_an_integer_on_each_line + +{ + n = $0; + i = 0; + while (n > 0) { + arr[i] = n % 2 + n = int(n / 2) + i++ + } + len = i-1 + i = 0 + while (arr[len-i] == arr[i] && i < len/2) { + i++ + } + print arr[len-i]==arr[i] ? 1 : 0 +} |