使用给定的括号
打印平衡括号表达式
原文:https://www . geesforgeks . org/print-the-balanced-括号-expression-use-given-括号/
给定四个整数 a 、 b 、 c 和 d ，表示四种括号的数量。
- "(("
- "()"
- ")("
- "))"
任务是使用所有给定的括号打印任何平衡的括号表达式。如果我们不能形成一个平衡的括号表达式，那么打印 -1 。如果有多个答案，打印任意一个。 例:
输入: a = 3，b = 1，c = 4，d = 3 输出:((((((())())))))() 输入: a = 3，b = 1，c = 4，d = 8 输出: -1 给定的括号不可能有平衡的括号表达式。
方法:首先检查给定数量的括号是否能形成平衡括号表达式。如果类型 1 括号的数量等于类型 4 括号的数量，并且有任意数量的类型 3 括号，或者只有类型 2 括号，我们就可以形成表达式。因此组合条件为:
(a = = d & & a)| |(a = = 0 & & c = = 0 & & d = = 0)
如果满足以上条件，可以按照以下步骤打印平衡括号表达式:
- 打印第 1 类括号的数量。
- 打印 3 型括号的数量。
- 打印第 4 类括号的数量。
- 打印第 2 类括号的数量。
以下是上述方法的实现:
C++
// C++ implementation of the approach
#include <bits/stdc++.h>
using namespace std;
// Function to print balanced bracket
// expression if it is possible
void printBalancedExpression(int a, int b, int c, int d)
{
// If the condition is met
if ((a == d && a) || (a == 0 && c == 0 && d == 0)) {
// Print brackets of type-1
for (int i = 1; i <= a; i++)
cout << "((";
// Print brackets of type-3
for (int i = 1; i <= c; i++)
cout << ")(";
// Print brackets of type-4
for (int i = 1; i <= d; i++)
cout << "))";
// Print brackets of type-2
for (int i = 1; i <= b; i++)
cout << "()";
}
// If the condition is not met
else
cout << -1;
}
// Driver code
int main()
{
int a = 3, b = 1, c = 4, d = 3;
printBalancedExpression(a, b, c, d);
return 0;
}
Java 语言(一种计算机语言，尤用于创建网站)
// Java implementation of the above approach
class GFG
{
// Function to print balanced bracket
// expression if it is possible
static void printBalancedExpression(int a,
int b, int c, int d)
{
// If the condition is met
if (((a == d) && (a != 0)) ||
((a == 0) && (c == 0) && (d == 0)))
{
// Print brackets of type-1
for (int i = 1; i <= a; i++)
System.out.print("((");
// Print brackets of type-3
for (int i = 1; i <= c; i++)
System.out.print(")(");
// Print brackets of type-4
for (int i = 1; i <= d; i++)
System.out.print("))");
// Print brackets of type-2
for (int i = 1; i <= b; i++)
System.out.print("()");
}
// If the condition is not met
else
System.out.print(-1);
}
// Driver code
public static void main(String args[])
{
int a = 3, b = 1, c = 4, d = 3;
printBalancedExpression(a, b, c, d);
}
}
// This code is contributed by Ryuga
Python 3
# Python3 implementation of the approach
# Function to print balanced bracket
# expression if it is possible
def printBalancedExpression(a, b, c, d):
# If the condition is met
if ((a == d and a) or
(a == 0 and c == 0 and d == 0)):
# Print brackets of type-1
for i in range(1, a + 1):
print("((", end = "")
# Print brackets of type-3
for i in range(1, c + 1):
print(")(", end = "")
# Print brackets of type-4
for i in range(1, d + 1):
print("))", end = "")
# Print brackets of type-2
for i in range(1, b + 1):
print("()", end = "")
# If the condition is not met
else:
print("-1")
# Driver code
if __name__ == "__main__":
a, b, c, d = 3, 1, 4, 3
printBalancedExpression(a, b, c, d)
# This code is contributed by Rituraj Jain
C
// C# implementation of the approach
using System;
class GFG
{
// Function to print balanced bracket
// expression if it is possible
static void printBalancedExpression(int a,
int b, int c, int d)
{
// If the condition is met
if (((a == d) && (a != 0)) ||
((a == 0) && (c == 0) && (d == 0)))
{
// Print brackets of type-1
for (int i = 1; i <= a; i++)
Console.Write("((");
// Print brackets of type-3
for (int i = 1; i <= c; i++)
Console.Write(")(");
// Print brackets of type-4
for (int i = 1; i <= d; i++)
Console.Write("))");
// Print brackets of type-2
for (int i = 1; i <= b; i++)
Console.Write("()");
}
// If the condition is not met
else
Console.Write(-1);
}
// Driver code
public static void Main()
{
int a = 3, b = 1, c = 4, d = 3;
printBalancedExpression(a, b, c, d);
}
}
// This code is contributed by Akanksha Rai
服务器端编程语言（Professional Hypertext Preprocessor 的缩写）
<?php
//PHP implementation of the approach
// Function to print balanced bracket
// expression if it is possible
function printBalancedExpression($a, $b, $c, $d)
{
// If the condition is met
if (($a == $d && $a) ||
($a == 0 && $c == 0 && $d == 0))
{
// Print brackets of type-1
for ($i = 1; $i <= $a; $i++)
echo "((";
// Print brackets of type-3
for ($i = 1; $i <= $c; $i++)
echo ")(";
// Print brackets of type-4
for ($i = 1; $i <= $d; $i++)
echo "))";
// Print brackets of type-2
for ($i = 1; $i <= $b; $i++)
echo "()";
}
// If the condition is not met
else
echo -1;
}
// Driver code
$a = 3;
$b = 1;
$c = 4;
$d = 3;
printBalancedExpression($a, $b, $c, $d);
// This code is contributed by jit_t
?>
java 描述语言
<script>
// Javascript implementation of the above approach
// Function to print balanced bracket
// expression if it is possible
function printBalancedExpression(a , b , c , d)
{
// If the condition is met
if (((a == d) && (a != 0)) || ((a == 0) &&
(c == 0) && (d == 0))) {
// Print brackets of type-1
for (i = 1; i <= a; i++)
document.write("((");
// Print brackets of type-3
for (i = 1; i <= c; i++)
document.write(")(");
// Print brackets of type-4
for (i = 1; i <= d; i++)
document.write("))");
// Print brackets of type-2
for (i = 1; i <= b; i++)
document.write("()");
}
// If the condition is not met
else
document.write(-1);
}
// Driver code
var a = 3, b = 1, c = 4, d = 3;
printBalancedExpression(a, b, c, d);
// This code contributed by umadevi9616
</script>
Output:
(((((()()()()())))))()
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