不使用++或+
增加一个数字
原文:https://www . geesforgeks . org/increment-a-number-not-use-or/
任务是在不使用++和++运算符的情况下递增一个数字。 例:
Input : 3
Output : 4
Input : 9
Output : 10
这个想法是基于这样一个事实:负数是用 2 的补码形式存储的。2 的补码形式是通过反转位然后加 1 得到的。所以，如果我们把给定数字的所有位反转，并应用负号，我们得到的是数字加 1。
C++
// CPP program to increment an unsigned
// int using bitwise operators.
#include <bits/stdc++.h>
using namespace std;
// function that increment the value.
int increment(unsigned int i)
{
// Invert bits and apply negative sign
i = -(~i);
return i;
}
// Driver code
int main()
{
int n = 3;
cout << increment(n);
return 0;
}
Java 语言(一种计算机语言，尤用于创建网站)
// Java program to increment
// an unsigned int using
// bitwise operators.
import java.io.*;
class GFG
{
// function that increment
// the value.
static long increment(long i)
{
// Invert bits and
// apply negative sign
i = -(~i);
return i;
}
// Driver code
public static void main (String[] args)
{
long n = 3;
System.out.print( increment(n));
}
}
// This code is contributed
// by inder_verma.
Python 3
# Python3 program to increment
# an unsigned int using
# bitwise operators.
# function that increment the value.
def increment(i):
# Invert bits and
# apply negative sign
i = -(~i);
return i;
# Driver code
if __name__ == "__main__":
n = 3;
print(increment(n));
# This code is contributed by mits
C
// C# program to increment
// an unsigned int using
// bitwise operators.
using System;
class GFG
{
// function that increment
// the value.
static long increment(long i)
{
// Invert bits and
// apply negative sign
i = -(~i);
return i;
}
// Driver code
public static void Main ()
{
long n = 3;
Console.WriteLine(increment(n));
}
}
// This code is contributed
// by inder_verma.
服务器端编程语言（Professional Hypertext Preprocessor 的缩写）
<?php
// PHP program to increment
// an unsigned int using
// bitwise operators.
// function that increment the value.
function increment($i)
{
// Invert bits and
// apply negative sign
$i = -(~$i);
return $i;
}
// Driver code
$n = 3;
echo increment($n);
// This code is contributed by mits
?>
java 描述语言
<script>
// Javascript program to increment an unsigned
// int using bitwise operators.
// function that increment the value.
function increment(i) {
// Invert bits and apply negative sign
i = -(~i);
return i;
}
// Driver code
let n = 3;
document.write(increment(n));
// This code is contributed by _saurabh_jaiswal
</script>
Output:
4
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