# Python: Determine which triples sum to zero

## Python Programming Puzzles: Exercise-39 with Solution

Write a Python program to determine which triples sum to zero from a given list of lists.

Input: [[1343532, -2920635, 332], [-27, 18, 9], [4, 0, -4], [2, 2, 2], [-20, 16, 4]] Output: [False, True, True, False, True] Input: [[1, 2, -3], [-4, 0, 4], [0, 1, -5], [1, 1, 1], [-2, 4, -1]] Output: [True, True, False, False, False]

**Pictorial Presentation:**

**Sample Solution-1:**

**Python Code:**

```
#License: https://bit.ly/3oLErEI
def test(nums):
return [sum(t)==0 for t in nums]
nums = [[1343532, -2920635, 332], [-27, 18, 9], [4, 0, -4], [2, 2, 2], [-20, 16, 4]]
print("Original list of lists:",nums)
print("Determine which triples sum to zero:")
print(test(nums))
nums = [[1, 2, -3], [-4, 0, 4], [0, 1, -5], [1, 1, 1], [-2, 4, -1]]
print("\nOriginal list of lists:",nums)
print("Determine which triples sum to zero:")
print(test(nums))
```

Sample Output:

Original list of lists: [[1343532, -2920635, 332], [-27, 18, 9], [4, 0, -4], [2, 2, 2], [-20, 16, 4]] Determine which triples sum to zero: [False, True, True, False, True] Original list of lists: [[1, 2, -3], [-4, 0, 4], [0, 1, -5], [1, 1, 1], [-2, 4, -1]] Determine which triples sum to zero: [True, True, False, False, False]

**Flowchart:**

**Sample Solution-2:**

**Python Code:**

```
#License: https://bit.ly/3oLErEI
def test(nums):
zero_sums = []
for trip in nums:
for i in range(len(trip)):
for j in range(i + 1, len(trip)):
for k in range(j + 1, len(trip)):
if trip[i] + trip[j] + trip[k] == 0:
zero_sums.append(True)
break
else:
continue
break
else:
continue
break
else:
zero_sums.append(False)
return zero_sums
nums = [[1343532, -2920635, 332], [-27, 18, 9], [4, 0, -4], [2, 2, 2], [-20, 16, 4]]
print("Original list of lists:",nums)
print("Determine which triples sum to zero:")
print(test(nums))
nums = [[1, 2, -3], [-4, 0, 4], [0, 1, -5], [1, 1, 1], [-2, 4, -1]]
print("\nOriginal list of lists:",nums)
print("Determine which triples sum to zero:")
print(test(nums))
```

Sample Output:

Original list of lists: [[1343532, -2920635, 332], [-27, 18, 9], [4, 0, -4], [2, 2, 2], [-20, 16, 4]] Determine which triples sum to zero: [False, True, True, False, True] Original list of lists: [[1, 2, -3], [-4, 0, 4], [0, 1, -5], [1, 1, 1], [-2, 4, -1]] Determine which triples sum to zero: [True, True, False, False, False]

**Flowchart:**

**Python Code Editor :**

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