take new largest value
if ( mat [ n - 1 - i ] [ i ] > secondaryMax ) { secondaryMax = mat [ n - 1 - i ] [ i ] ; } } System . out . println ( " Principal ▁ Diagonal ▁ Smallest ▁ Element : ▁ " + principalMin ) ; System . out . println ( " Principal ▁ Diagonal ▁ Greatest ▁ Element ▁ : ▁ " + principalMax ) ; System . out . println ( " Secondary ▁ Diagonal ▁ Smallest ▁ Element : ▁ " + secondaryMin ) ; System . out . println ( " Secondary ▁ Diagonal ▁ Greatest ▁ Element : ▁ " + secondaryMax ) ; }