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PHP Ds / Deque sum () function

Syntax:
public DsDeque::sum (void): number
Parameters: this function takes no parameters.Returned value:this function returns the sum of all Deque elements.The following programs illustrate the Ds / function Deque::sum()in PHP:Program 1: < ? php  
// Declare deque $deck = new DsDeque ([5, 6, 3, 2, 7, 1]); echo ( " Elements of Deque " );  
// Show Deque elements print_r ( $deck ); echo ( " Sum of all Deque elements: " );  
// Use the sum() function to add all
// Deque elements var_dump ( $deck -> sum());  
?>
Exit:
Elements of Deque DsDeque Object ([0] = > 5 [1] = > 6 [2] = > 3 [3] = > 2 [4] = > 7 [5] = > 1) Sum of all Deque elements: int (24)
Program 2:  
// Declare deque $deck = new DsDeque ([1.5, 6.3 , 2.3, 7.2, 4.7, 9.3]); echo ( " Elements of Deque " );  
// Show Deque elements print_r ( $deck ); echo ( " Sum of all Deque elements: " );  
// Use the sum() function to add all
// Deque elements var_dump ( $deck -> sum());  
?>
Exit:
Elements of Deque DsDeque Object ([0] => 1.5 [1] => 6.3 [2] => 2.3 [3] => 7.2 [4] => 4.7 [5] => 9.3) Sum of all Deque elements: float (31.3)
Link: http: // php.net/manual/en/ds-deque.sum.php

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