# Assembly language program to find largest number in an array

**Problem –** Determine largest number in an array of n elements. Value of n is stored at address 2050 and array starts from address 2051. Result is stored at address 3050. Starting address of program is taken as 2000.

**Example –**

**Algorithm –**

- We are taking first element of array in A
- Comparing A with other elements of array, if A is smaller then store that element in A otherwise compare with next element
- The value of A is the answer

**Program –**

Memory Address | Mnemonics | Comment |
---|---|---|

2000 | LXI H 2050 | H←20, L←50 |

2003 | MOV C, M | C←M |

2004 | DCR C | C←C-01 |

2005 | INX H | HL←HL+0001 |

2006 | MOV A, M | A←M |

2007 | INX H | HL←HL+0001 |

2008 | CMP M | A-M |

2009 | JNC 200D | If Carry Flag=0, goto 200D |

200C | MOV A, M | A←M |

200D | DCR C | C←C-1 |

200E | JNZ 2007 | If Zero Flag=0, goto 2007 |

2011 | STA 3050 | A→3050 |

2014 | HLT |

**Explanation –** Registers used: **A, H, L, C**

**LXI 2050**assigns 20 to H and 50 to L**MOV C, M**copies content of memory (specified by HL register pair) to C (this is used as a counter)**DCR C**decrements value of C by 1**INX H**increases value of HL by 1. This is done to visit next memory location**MOV A, M**copies content of memory (specified by HL register pair) to A**INX H**increases value of HL by 1. This is done to visit next memory location**CMP M**compares A and M by subtracting M from A.**Carry flag and sign flag becomes set if A-M is negative****JNC 200D**jumps program counter to 200D if carry flag = 0**MOV A, M**copies content of memory (specified by HL register pair) to A**DCR C**decrements value of C by 1**JNZ 2007**jumps program counter to 2007 if zero flag = 0**STA 3050**stores value of A at 3050 memory location**HLT**stops executing the program and halts any further execution

## Recommended Posts:

- Assembly language program to find the range of bytes
- Convert C/C++ code to assembly language
- Program to find largest element in an array
- 8086 program to determine largest number in an array of n numbers
- Assembly program to transfer the status of switches
- Find largest d in array such that a + b + c = d
- Find the largest three elements in an array
- Find Second largest element in an array
- Find largest element from array without using conditional operator
- Given an array and two integers l and r, find the kth largest element in the range [l, r]
- Largest palindromic number in an array
- Largest number in an array that is not a perfect cube
- Largest perfect cube number in an Array
- Find the largest number that can be formed with the given digits
- Given a sorted array and a number x, find the pair in array whose sum is closest to x

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.