A Number After a Double Reversal
给个数字, 问翻转两次是不是和以前的数字一样.
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class Solution { public boolean isSameAfterReversals(int num) { if(num == 0) return true; String s = String.valueOf(num); if(s.charAt(0) == '0') return false; if(s.charAt(s.length() - 1) == '0') return false; return true; } } |