Help me about array Find

  • Resolved Bakhshi

    (@bakhshi)


    4 years, 9 months ago

    Hello
    I’m going to use the array in this site:
    https://www.geeksforgeeks.org/find-closest-number-array/

    // Java program to find element closet to given target. 
import java.util.*; 
import java.lang.*; 
import java.io.*; 

class FindClosestNumber { 
	
	// Returns element closest to target in arr[] 
	public static int findClosest(int arr[], int target) 
	{ 
		int n = arr.length; 

		// Corner cases 
		if (target <= arr[0]) 
			return arr[0]; 
		if (target >= arr[n - 1]) 
			return arr[n - 1]; 

		// Doing binary search 
		int i = 0, j = n, mid = 0; 
		while (i < j) { 
			mid = (i + j) / 2; 

			if (arr[mid] == target) 
				return arr[mid]; 

			/* If target is less than array element, 
			then search in left */
			if (target < arr[mid]) { 
		
				// If target is greater than previous 
				// to mid, return closest of two 
				if (mid > 0 && target > arr[mid - 1]) 
					return getClosest(arr[mid - 1], 
								arr[mid], target); 
				
				/* Repeat for left half */
				j = mid;			 
			} 

			// If target is greater than mid 
			else { 
				if (mid < n-1 && target < arr[mid + 1]) 
					return getClosest(arr[mid], 
						arr[mid + 1], target);				 
				i = mid + 1; // update i 
			} 
		} 

		// Only single element left after search 
		return arr[mid]; 
	} 

	// Method to compare which one is the more close 
	// We find the closest by taking the difference 
	// between the target and both values. It assumes 
	// that val2 is greater than val1 and target lies 
	// between these two. 
	public static int getClosest(int val1, int val2, 
										int target) 
	{ 
		if (target - val1 >= val2 - target) 
			return val2;		 
		else
			return val1;		 
	} 

	// Driver code 
	public static void main(String[] args) 
	{ 
		int arr[] = { 1, 2, 4, 5, 6, 6, 8, 9 }; 
		int target = 11; 
		System.out.println(findClosest(arr, target)); 
	} 
} 
    Output:
9

    I completely replaced the code in the Calculated Field
    But output 9 didn’t show!

    What parts of this array are not known for the plugin?

Viewing 7 replies - 1 through 7 (of 7 total)
  • Plugin Author codepeople

    (@codepeople)

    Hello @bakhshi

    Java and JavaScript are two different programming languages, the programming language supported by browsers is javascript, and you are trying to use a block of Java code in the equations associated to the calculated fields, I’m sorry, but that’s not possible.

    Best regards.

    Thread Starter Bakhshi

    (@bakhshi)

    thank you

                function closest (num, arr) {
                var curr = arr[0];
                var diff = Math.abs (num - curr);
                for (var val = 0; val < arr.length; val++) {
                    var newdiff = Math.abs (num - arr[val]);
                    if (newdiff < diff) {
                        diff = newdiff;
                        curr = arr[val];
                    }
                }
                return curr;
            }
            array = [2, 42, 82, 122, 162, 202, 242, 282, 322, 362];
            number = 150;
            alert (closest (number, array));

    Help me please
    I replaced the word “return” instead of the word “alert”
    But the result does not show!

    alert (closest (number, array));
    return (closest (number, array));

    Plugin Author codepeople

    (@codepeople)

    Hello @bakhshi

    In this case you need to implement your equation using the function structure.

    Insert a calculated field in the form, and enter through its attribute: “Set equation”, the following piece of code:

    
(function(){
	function closest (num, arr) {
		var curr = arr[0];
		var diff = Math.abs (num - curr);
		for (var val = 0; val < arr.length; val++) {
			var newdiff = Math.abs (num - arr[val]);
			if (newdiff < diff) {
				diff = newdiff;
				curr = arr[val];
			}
		}
		return curr;
	}
    var _array = [2, 42, 82, 122, 162, 202, 242, 282, 322, 362],
		_number = 150;
    
	return closest (_number, _array);
})()

    and that’s all.

    Best regards.

    Thread Starter Bakhshi

    (@bakhshi)

    thank you very much indeed!

    Thread Starter Bakhshi

    (@bakhshi)

    You may help me again!
    this is find closest index of array:

    function closest(num, arr) {
    var curr = arr[0],
        diff = Math.abs(num - curr),
        index = 0;

    for (var val = 0; val < arr.length; val++) {
        let newdiff = Math.abs(num - arr[val]);
        if (newdiff < diff) {
            diff = newdiff;
            curr = arr[val];
            index = val;
        }
    }
    return index;
}

var array = [2, 42, 82, 122, 162, 202, 242, 282, 322, 362],
    number = 155;

console.log(closest(number, array));

    I put in the calculated field as follows, But it does not produce results!

    (function(){
function closest(num, arr) {
    var curr = arr[0],
        diff = Math.abs(num - curr),
        index = 0;

    for (var val = 0; val < arr.length; val++) {
        let newdiff = Math.abs(num - arr[val]);
        if (newdiff < diff) {
            diff = newdiff;
            curr = arr[val];
            index = val;
        }
    }
    return index;
}

var array = [2, 42, 82, 122, 162, 202, 242, 282, 322, 362],
    number = 155;

console.log(closest(number, array));
})()

    thank you.

    Plugin Author codepeople

    (@codepeople)

    Hello @bakhshi

    The line of code:

    
console.log(closest(number, array));

    must be edited as follows:

    
return closest(number, array);

    If you need additional help implementing your specific project, you can contact me through the following link: Customization

    Best regards.

    Thread Starter Bakhshi

    (@bakhshi)

    thanks

Viewing 7 replies - 1 through 7 (of 7 total)
  • The topic ‘Help me about array Find’ is closed to new replies.