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Convert infix to postfix using stack in Java

Infix Expression : Any expression in the standard form like "2*3-4/5" is an Infix(Inorder) expression. Postfix Expression : The Postfix(Postorder) form of the above expression is "23*45/-". Example :  infix (1+2)*(3+4)with parentheses: ((1+2)*(3+4))in postfix: 12+34+*in prefix: *+12+34infix 1^2*3-4+5/6/(7+8)paren.: ((((1^2)*3)-4)+((5/6)/(7+8)))in postfix: 12^3*4-56/78+/+in prefix: +-*^1234//56+78Scan the Infix string from left to right.Initialise an empty stack.If the scannned character is an operand, add it to the Postfix string. If the scanned character is an operator and if the stack is empty Push the character tostack.If the scanned character is an Operand and the stack is not empty, compare the precedence of the character with the element on top of the stack(topStack). If topStack has higher precedence over the scanned character Popthe stack else Push the scanned character to stack. Repeat this step as long as …
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Insertion Sort in Java

Insertion sort is a simple sorting algorithm that builds the final sorted array (or list) one item at a time. It is much less efficient on large lists than more advanced algorithms such as quicksort, heapsort, or merge sort. However, insertion sort provides several advantages:
Java Source Code:

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Selection Sort in Java

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Let us see an example of sorting an array to make the idea of selection sort clearer.

Example. Sort {5, 1, 12, -5, 16, 2, 12, 14} using selection sort.
Java Source Code:

Output:Enter the array size:

Palindrome program using stack and queue in java

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