leetcode-rust/src/a0007_reverse_integer.rs at master · liguangsheng/leetcode-rust · GitHub

Name: leetcode-rust/src/a0007_reverse_integer.rs at master · liguangsheng/leetcode-rust · GitHub
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/*
 * [0007] reverse-integer
 */

pubstructSolution{}

// solution impl starts here
implSolution{
pubfnreverse(x:i32) -> i32{
letmut m = x.abs()asi64;
letmut n = 0i64;
while m > 0{
 n *= 10;
 n += m % 10;
 m /= 10;
}
if x < 0{
 n *= -1;
}

if n > std::i32::MAXasi64 || n < std::i32::MINasi64{
return0;
}

 n asi32
}
}
// solution impl ends here

// solution tests starts here

#[cfg(test)]
mod tests {
usesuper::*;

#[test]
fntest_case0(){
assert_eq!(321,Solution::reverse(123));
assert_eq!(-321,Solution::reverse(-123));
assert_eq!(0,Solution::reverse(1534236469));
}
}

// solution tests ends here