public int reverse(int x) {
String s = String.valueOf(x); //整数转字符串
int len = s.length();
int zs = len;
if(s.charAt(0)=='-'){ //判断正负
zs = len-1;
}
String temp = "";
for(int i=0;i<zs;i++){ //倒叙
temp = temp + s.charAt(len-i-1);
}
int res = 0;
try { //处理异常 超过int的范围返回0
if(zs==len-1){
res = 0-Integer.parseInt(temp);
}else{
res = Integer.parseInt(temp);
}
}catch (Exception e){
return 0;
}
return res;
}
反正就很暴力 优化代码见github
