题解 | #求1+2+3+...+n#
求1+2+3+...+n
https://www.nowcoder.com/practice/7a0da8fc483247ff8800059e12d7caf1
public class Solution {
public int Sum_Solution(int n) {
if (n <= 1) {
return n;
}
return n + Sum_Solution(n - 1);
}
}
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