6 lines
168 B
Bash
6 lines
168 B
Bash
leap() {
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if expr $1 % 4 >/dev/null; then return 1; fi
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if expr $1 % 100 >/dev/null; then return 0; fi
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if expr $1 % 400 >/dev/null; then return 1; fi
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return 0;
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}
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