258-e-Add Digits
2015-08-23 11:42
309 查看
很高兴leet终于正常了!看来应该是前段时间改版调试问题导致登陆不正常,不是被墙就好!
为了庆祝leet恢复正常,刷一道easy压压惊。
说正题,循环加各位数直到和为个位数。hint里竟然说可以不用循环?那一定又是有某数学公式了,不是我可以驾驭的,老老实实while循环搞出来。
ac如下:
int addDigits(int num) {
int result = 0;
int temp = 0;
while (num / 10) {
while (num > 0) {
temp = temp + num % 10;
num /= 10;
}
num = temp;
temp = 0;
}
result = num;
return result;
}
为了庆祝leet恢复正常,刷一道easy压压惊。
说正题,循环加各位数直到和为个位数。hint里竟然说可以不用循环?那一定又是有某数学公式了,不是我可以驾驭的,老老实实while循环搞出来。
ac如下:
int addDigits(int num) {
int result = 0;
int temp = 0;
while (num / 10) {
while (num > 0) {
temp = temp + num % 10;
num /= 10;
}
num = temp;
temp = 0;
}
result = num;
return result;
}
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