错误：不兼容的类型？我还能怎么做？

Question

public static int linearSearch(int[] data, int numToFind) 
{ 
    int found=-1; 
    for (int x=0;x<data.length;x++){ 

     **if(data[x] =numToFind)** 
     found = x ; 

     break; 
    } 
    return found; 
}  

在那里我有我的错误它说，它在if(data[x]=numToFind)

Answer 1

IF在Java语句要求布尔不兼容的类型。你的代码应该是

if(data[x] ==numToFind) 

这可能是一个错字。

A mistake users from C background frequently make is confusing the assignment and equality operators = and ==. If you want to compare two values, you should use a double equal sign since that's how Java works. If you accidentally use a single equal sign, you don't compare values but assign a value to a variable. Your code would have perfectly worked in C, but it won't work in Java

Answer 2

里面if条件应该是boolean值。你犯了一个错字，应该是：

if (data[x] == numToFind) 

Answer 3

你需要把if(data[x] == numToFind)。

用一只=它是分配。有两个是布尔型 * 运营商 *。

Answer 4

public static int linearSearch(int data[], int numToFind) 
{ 
    int found=-1; 
    for (int x=0;x<data.length;x++){ 

     if(data[x] == numToFind) 
     found = x ; 

     break; 
    } 
    return found; 
} 

试试这个。