Java Booleans.indexOf(boolean[] array, boolean[] target)用法及代码示例

Guava布尔类的Booleans.indexOf(boolean [] array，boolean [] target)方法接受两个参数array和target。如果目标存在于数组中，则该方法返回其首次出现的开始位置。如果目标在数组中不存在，则该方法返回-1。

用法:

public static int indexOf(boolean[] array,
                          boolean[] target)

参数：该方法接受两个参数：

array:搜索序列目标的数组。
target:要搜索为sub-sequence数组的数组。

返回值：该方法返回：

如果目标存在于数组中，则首次出现目标的起始位置。
如果目标在数组中不存在，则为-1。

异常：该方法不会引发任何异常。

以下示例说明了上述方法的实现：

范例1：

// Java code to show implementation of 
// Guava's Booleans.indexOf(boolean[] array, 
// boolean[] target) method 
  
import com.google.common.primitives.Booleans; 
import java.util.Arrays; 
  
class GFG { 
  
    // Driver's code 
    public static void main(String[] args) 
    { 
  
        // Creating a boolean array 
        boolean[] arr = { false, true, false, 
                          false, true }; 
  
        boolean[] target = { false, false }; 
  
        // Using indexOf(boolean[] array, boolean[] target) 
        // method to get the start position of the first 
        // occurrence of the specified target within array, 
        // or -1 if there is no such occurrence. 
        int index = Booleans.indexOf(arr, target); 
  
        if (index != -1) { 
            System.out.println("Target is present at index "
                               + index); 
        } 
        else { 
            System.out.println("Target is not present "
                               + "in the array"); 
        } 
    } 
}

范例2：

// Java code to show implementation of 
// Guava's Booleans.indexOf(boolean[] array, 
// boolean[] target) method 
  
import com.google.common.primitives.Booleans; 
import java.util.Arrays; 
  
class GFG { 
  
    // Driver's code 
    public static void main(String[] args) 
    { 
  
        // Creating a boolean array 
        boolean[] arr = { false, true, false, 
                          false, true }; 
  
        boolean[] target = { false, false, false }; 
  
        // Using indexOf(boolean[] array, boolean[] target) 
        // method to get the start position of the first 
        // occurrence of the specified target within array, 
        // or -1 if there is no such occurrence. 
        int index = Booleans.indexOf(arr, target); 
  
        if (index != -1) { 
            System.out.println("Target is present at index "
                               + index); 
        } 
        else { 
            System.out.println("Target is not present "
                               + "in the array"); 
        } 
    } 
}

参考： https://google.github.io/guava/releases/20.0/api/docs/com/google/common/primitives/Booleans.html#indexOf-boolean:A-boolean:A-

相关用法

注：本文由纯净天空筛选整理自Sahil_Bansall大神的英文原创作品 Java Guava | Booleans.indexOf(boolean[] array, boolean[] target) method with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。