如何更改此while while循環？

有人可以看看我的代碼。這是一個爲用戶提供所需藝術家的圖表位置的程序。它並沒有太多的工作。此外，即時通訊使用while循環im告訴我應該使用if語句。有人可以向我解釋這一點，並告訴我如何改變它。我非常新的這個和不太明白這裏是我的代碼如何更改此while while循環？

import java.util.*; 

public class chartPosition 
{ 
public static void main (String [] args) 
{ 


    System.out.println("Which artist would you like?"); 
    String [] chart = { "Rihanna", "Cheryl Cole", "Alexis Jordan", "Katy Perry", "Bruno Mars", "Cee Lo Green", 
           "Mike Posner", "Nelly", "Duck Sauce", "The Saturdays"}; 

    String entry = ""; 
    Scanner kb = new Scanner (System.in); 

    entry = kb.nextLine(); 
    find (entry, chart); 
} 

public static void find (String entry,String [] chart) { 

int location = -1 ; 
for (int i=0;i<chart.length;) 
{ 
    while (entry.equalsIgnoreCase(chart[i])) 

    { 
     System.out.println(chart + "is at position " + (i+1) + "."); 
     location = i; 
     break; 
    } 
    } 
if (location == -1); 
{ 
    System.out.println("is not in the chart"); 
} 

} 
}

來源

2013-03-21 Ben Jahnee

只需更改單詞'while'這個詞'if'。如果（entry.equalsIgnoreCase（圖表[i ++]））' '將'I ++'放在for循環的末尾 – jonhopkins 2013-03-21 15:17:34

只是將'entry.equalsIgnoreCase（圖表[i]）） ' – 2013-03-21 15:17:40

（學習）使用調試器並單步執行代碼，檢查變量。這將提供信息，無論如何您都需要進行真正的調試。 – 2013-03-21 15:20:14

for (int i=0;i<chart.length;) 
{ 
    if (entry.equalsIgnoreCase(chart[i])) 
    { 
     System.out.println(chart + "is at position " + (i+1) + "."); 
     location = i; 
     break; 
    } 
}

來源

2013-03-21 15:19:37 Ron

我把修復的意見，看看他們，更改代碼= ）

import java.util.*; 

    public class chartPosition 
    { 
    public static void main (String [] args) 
    { 


     System.out.println("Which artist would you like?"); 
     String [] chart = { "Rihanna", "Cheryl Cole", "Alexis Jordan", "Katy Perry", "Bruno Mars", "Cee Lo Green", 
            "Mike Posner", "Nelly", "Duck Sauce", "The Saturdays"}; 

     String entry = ""; 
     Scanner kb = new Scanner (System.in); 

     entry = kb.nextLine(); 
     find (entry, chart); 
    } 

    public static void find (String entry,String [] chart) { 

    int location = -1 ; 

// in for loop there should be defined step, in your case you must change for loop on for (int i=0;i<chart.length;i++), becouse your loop stands on same i value 

    for (int i=0;i<chart.length;) 
    { 

//there should be WHILE changed for IF...the if is condition and while is loop... 
     while (entry.equalsIgnoreCase(chart[i])) 

     { 
      System.out.println(chart + "is at position " + (i+1) + "."); 
      location = i; 
      break; 
     } 
     } 
    if (location == -1); 
    { 
     System.out.println("is not in the chart"); 
    } 

    } 
    }

來源

2013-03-21 15:22:20 user1554427

你是已經在for循環中，這就是爲什麼你應該改變「while」作爲「if」的原因。這兩個語句（for和while）用於迭代，直到引發一個條件（在這種情況下，我是< chart.length）;還有，我沒有測試，但我覺得你的代碼不能工作，因爲你沒有增加i：

for (int i=0; i<chart.length; i++) 
{ 

    if (entry.equalsIgnoreCase(chart[i])) 
    { 
     System.out.println(chart + "is at position " + (i+1) + "."); 
     location = i; 
     break; 
    } 
}`

來源

2013-03-21 15:22:25 maxivis

如何更改此while while循環？

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